{"id":6519,"date":"2024-01-19T19:41:06","date_gmt":"2024-01-19T10:41:06","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=6519"},"modified":"2024-01-19T19:41:08","modified_gmt":"2024-01-19T10:41:08","slug":"css-centering","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/css-centering\/","title":{"rendered":"\u3010\u6c7a\u5b9a\u7248\u3011CSS\u3067\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac"},"content":{"rendered":"<p>\u300cCSS\u3067\u8981\u7d20\u3092\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u300d\u3068\u3044\u3063\u3066\u3082HTML\u8981\u7d20\u306e\u7a2e\u985e\u3084\u4e2d\u592e\u914d\u7f6e\u306b\u3059\u308b\u65b9\u5411\u306a\u3069\u306b\u3088\u3063\u3066\u53d6\u308b\u65b9\u6cd5\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u624b\u9806\u306f\u96e3\u3057\u3044\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u5358\u7d14\u306b\u3084\u308a\u65b9\u304c\u8907\u6570\u3042\u308b\u3053\u3068\u3067\u96e3\u3057\u304f\u611f\u3058\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n<div style=\"margin-top:4%;\">\n<p style=\"text-align:center; text-decoration:underline blue; font-weight:bold;\"><a href=\"https:\/\/techmania.jp\/lp\/2\">\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u304b\u3089\u30b5\u30a4\u30c8\u5236\u4f5c\u307e\u3067<br>\u2193\u5b9f\u8df5\u529b\u304c\u8eab\u306b\u3064\u304f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u2193<\/a><\/p>\n<\/div>\n<div style=\"text-align:center; margin-top:1%;\"><a href=\"https:\/\/techmania.jp\/lp\/2\"><img decoding=\"async\" style=\"width:300px;\" alt=\"IT\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u5b66\u6821 \u30c6\u30c3\u30af\u30de\u30cb\u30a2\u30b9\u30af\u30fc\u30eb\" src=\"https:\/\/techmania.jp\/blog\/wp-content\/uploads\/2023\/05\/sc4.jpg\"><\/a><\/div>\n<div style=\"margin-top:-0.3%;\">\n<p style=\"text-align:center; text-decoration:underline red; font-weight:bold;\"><a href=\"https:\/\/techmania.jp\/lp\/2\"><font color=\"red\">\u226b\u30e2\u30cb\u30bf\u30fc\u5272\u5f15\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u5b9f\u65bd\u4e2d\uff01\u226a<\/font><\/a><\/p>\n<\/div>\n\n\n\n<h2 id=\"outline__1\" class=\"wp-block-heading\">\u3010\u4e88\u5099\u77e5\u8b58\u3011\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u30fb\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u30fb\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20<\/h2>\n\n\n<p>\u305d\u3082\u305d\u3082\u300c\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u300d\u300c\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u300d\u300c\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u300d\u306b\u3064\u3044\u3066\u3088\u304f\u308f\u304b\u3089\u306a\u3044\u3068\u3044\u3046\u4eba\u306e\u305f\u3081\u306b\u305d\u308c\u305e\u308c\u8aac\u660e\u3057\u307e\u3059\u3002\u77e5\u3063\u3066\u3044\u308b\u3068\u3044\u3046\u4eba\u306f\u8aad\u307f\u98db\u3070\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>HTML\u306e\u8981\u7d20\u306f\u3001\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u30fb\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3068\u3057\u3066\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td><strong>\u30d6\u30ed\u30c3\u30af\u8981\u7d20<\/strong><\/td><td><strong>\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20<\/strong><\/td><td><strong>\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u4e26\u3073\u65b9<\/strong><\/td><td>\u7e26\u306b\u7a4d\u307e\u308c\u308b<\/td><td>\u6a2a\u306b\u7a4d\u307e\u308c\u308b<\/td><td>\u6a2a\u306b\u7a4d\u307e\u308c\u308b<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u30b5\u30a4\u30ba<\/strong><\/td><td>\u5e45\u3084\u9ad8\u3055\u3092\u6307\u5b9a\u3067\u304d\u308b<\/td><td>\u6307\u5b9a\u3067\u304d\u306a\u3044<br>\uff08\u5185\u5bb9\u7269\u306e\u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u308b\uff09<\/td><td>\u5e45\u3084\u9ad8\u3055\u3092\u6307\u5b9a\u3067\u304d\u308b<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u6539\u884c<\/strong><\/td><td>\u524d\u5f8c\u3067\u6539\u884c\u3055\u308c\u308b<\/td><td>\u6539\u884c\u3055\u308c\u306a\u3044<\/td><td>\u6539\u884c\u3055\u308c\u306a\u3044<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>margin<\/strong><\/td><td>\u4e0a\u4e0b\u5de6\u53f3\u306b\u6307\u5b9a\u3067\u304d\u308b<\/td><td>\u5de6\u53f3\u306e\u307f\u6307\u5b9a\u3067\u304d\u308b<\/td><td>\u4e0a\u4e0b\u5de6\u53f3\u306b\u6307\u5b9a\u3067\u304d\u308b<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>padding<\/strong><\/td><td>\u4e0a\u4e0b\u5de6\u53f3\u306b\u6307\u5b9a\u3067\u304d\u308b<\/td><td>\u5de6\u53f3\u306e\u307f\u6307\u5b9a\u3067\u304d\u308b<br>\uff08\u4e0a\u4e0b\u3092\u6307\u5b9a\u3057\u3066\u3082\u524d\u5f8c\u306e\u884c\u3084\u8981\u7d20\u3068\u304b\u3076\u308b\uff09<\/td><td>\u4e0a\u4e0b\u5de6\u53f3\u306b\u6307\u5b9a\u3067\u304d\u308b<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>text-align<\/strong><\/td><td>\u6307\u5b9a\u3067\u304d\u306a\u3044<br>\uff08\u8981\u7d20\u306e\u4e2d\u8eab\u306b\u9069\u5fdc\u3055\u308c\u308b\uff09<\/td><td>\u6307\u5b9a\u3067\u304d\u308b<br>\uff08\u89aa\u8981\u7d20\u306b\u6307\u5b9a\uff09<\/td><td>\u6307\u5b9a\u3067\u304d\u308b<br>\uff08\u89aa\u8981\u7d20\u306b\u6307\u5b9a\uff09<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>vertical-align<\/strong><\/td><td>\u6307\u5b9a\u3067\u304d\u306a\u3044<\/td><td>\u6307\u5b9a\u3067\u304d\u308b<\/td><td>\u6307\u5b9a\u3067\u304d\u308b<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u4ee3\u8868\u4f8b<\/strong><br><strong>\uff08\u521d\u671f\u5024\uff09<\/strong><\/td><td>&lt;p&gt;\u30fb&lt;div&gt;\u306a\u3069<\/td><td>&lt;span&gt;\u30fb&lt;a&gt;\u30fb&lt;img&gt;\u306a\u3069<\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p><span style=\"color: #000000;\">\u73fe\u5728\u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308bHTML Standard\u3067\u306f\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u30ab\u30c6\u30b4\u30ea\u3068\u3044\u3046\u4f4d\u7f6e\u3065\u3051\u306b\u306a\u308a\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3084\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u3068\u3044\u3063\u305f\u5b9a\u7fa9\u306f\u89e3\u6d88\u3055\u308c\u307e\u3057\u305f\u304c\u3001display\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u7d99\u7d9a\u3057\u3066\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"xgXqMNuehb\"><a href=\"https:\/\/techmania.jp\/blog\/css-display\/\">CSS\u306edisplay:inline\u3001display:block\u3001display:inline-block\u306e\u9055\u3044\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;CSS\u306edisplay:inline\u3001display:block\u3001display:inline-block\u306e\u9055\u3044\u3092\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/css-display\/embed\/#?secret=4SZiTp3169#?secret=xgXqMNuehb\" data-secret=\"xgXqMNuehb\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<h4 id=\"outline__1_0_1\" class=\"wp-block-heading\">\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u3068\u306f<\/h4>\n\n\n<p>\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u3068\u306f\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u3072\u3068\u304b\u305f\u307e\u308a\u306b\u306a\u308b\u8981\u7d20\u3067\u3042\u308a\u3001\u5e45\u3084\u9ad8\u3055\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u524d\u5f8c\u3067\u6539\u884c\u304c\u5165\u308b\u305f\u3081\u3001\u6a2a\u4e26\u3073\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n<h4 id=\"outline__1_0_2\" class=\"wp-block-heading\">\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3068\u306f<\/h4>\n\n\n<p>\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3068\u306f\u3001\u6587\u7ae0\u306a\u3069\u306e\u4e00\u90e8\u306b\u306a\u308b\u8981\u7d20\u3067\u3042\u308a\u3001\u5e45\u3084\u9ad8\u3055\u306e\u6307\u5b9a\u306a\u3069\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u524d\u5f8c\u306b\u6539\u884c\u304c\u5165\u3089\u306a\u3044\u306e\u3067\u6a2a\u4e26\u3073\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b\u3001&lt;img&gt; 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id=\"outline__1_0_3\" class=\"wp-block-heading\">\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u3068\u306f<\/h4>\n\n\n<p>\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u3068\u306f\u3001\u8981\u7d20\u306e\u8868\u793a\u5f62\u5f0f\u3092\u6c7a\u3081\u308bdisplay\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u3068\u308c\u308b\u5024\u306e\u4e00\u3064\u3067\u3059\u3002\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3068\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u7279\u5fb4\u3092\u4f75\u305b\u6301\u3064\u3001\u3044\u308f\u3070\u4e21\u8005\u306e\u826f\u3044\u6240\u3069\u308a\u3092\u3057\u305f\u3088\u3046\u306a\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u3088\u3046\u306b\u5e45\u3084\u9ad8\u3055\u3092\u6307\u5b9a\u53ef\u80fd\u3067\u3042\u308a\u306a\u304c\u3089\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u306e\u3088\u3046\u306b\u6a2a\u4e26\u3073\u306b\u306a\u308a\u307e\u3059\u3002\u5143\u304b\u3089\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u8981\u7d20\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u300cdisplay:inline-block;\u300d\u3067\u305d\u306e\u8981\u7d20\u306e\u8868\u793a\u65b9\u6cd5\u3092\u5909\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">\u6c34\u5e73\u65b9\u5411\u3067\u4e2d\u592e\u63c3\u3048\u306b\u3059\u308b\u5834\u5408<\/h2>\n\n\n<p>\u6c34\u5e73\u65b9\u5411\u306b\u4e2d\u592e\u5bc4\u305b\u3059\u308b\u5834\u5408\u306f\u5782\u76f4\u65b9\u5411\u3088\u308a\u3082\u7c21\u5358\u306b\u884c\u3048\u307e\u3059\u3002\u4ee3\u8868\u7684\u306a\u8981\u7d20\u3068\u305d\u308c\u306b\u9069\u3057\u305f\u66f8\u304d\u65b9\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n<h3 id=\"outline__2_1\" class=\"wp-block-heading\">\u5b50\u8981\u7d20\u304c\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u306e\u5834\u5408<\/h3>\n\n\n\n<h4 id=\"outline__2_1_1\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300ctext-align:center;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u5b50\u8981\u7d20\u304c\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u306e\u5834\u5408\u306f\u3001\u89aa\u8981\u7d20\u306b\u300ctext-align:center;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u304c\u89aa\u8981\u7d20\u306e\u6c34\u5e73\u65b9\u5411\u4e2d\u592e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002text-align\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u6587\u7ae0\u306e\u63c3\u3048\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3001\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306b\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u5185\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u307e\u305f\u306f\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n text-align:center;\n background-color:yellow;\n height:100px;\n}\n.child{\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc6.png\" class=\"post-img\">\n\n\n\n<h5 class=\"wp-block-heading\">\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3092\u8907\u6570\u4e26\u3079\u305f\u5834\u5408<\/h5>\n\n\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c81\n &lt;\/span>\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c82\n &lt;\/span>\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c83\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n text-align:center;\n background-color:yellow;\n height:100px;\n}\n.child{\n background-color:skyblue;\n margin:10px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc7.png\" class=\"post-img\">\n\n\n<p>\u3061\u306a\u307f\u306b\u3001\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408\u3001\u8981\u7d20\u306e\u4e2d\u8eab\u306b\u9069\u5fdc\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;p>\u30c6\u30ad\u30b9\u30c8&lt;\/p><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>p{\n text-align:center;\n background:skyblue;\n height:50px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc8.png\" class=\"post-img\">\n\n\n<p>\u307e\u305f\u3001\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408\u3067\u3082\u3001\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306b\u3057\u3066text-align\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u9069\u7528\u3055\u305b\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u304c\u5b50\u8981\u7d20\u306e\u4e2d\u8eab\u307e\u3067\u52b9\u3044\u3066\u3057\u307e\u3046\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>\u6b21\u306b\u793a\u3059\u30b3\u30fc\u30c9\u3067\u306f&lt;p&gt;\u30bf\u30b0\u306b\u300ctext-align:center;\u300d\u304c\u9069\u7528\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u89aa\u8981\u7d20\u306e&lt;div&gt;\u30bf\u30b0\u306b\u6307\u5b9a\u3057\u305f\u30b9\u30bf\u30a4\u30eb\u304c&lt;p&gt;\u30bf\u30b0\u306b\u7d99\u627f\u3055\u308c\u3066&lt;p&gt;\u30bf\u30b0\u5185\u306e\u6587\u5b57\u304c\u4e2d\u592e\u306b\u5bc4\u3063\u3066\u3044\u307e\u3059\u3002&lt;p&gt;\u8981\u7d20\u306f\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u3067\u3042\u308b\u305f\u3081\u5e45\u306e\u521d\u671f\u5024\u304c\u89aa\u8981\u7d20\u306e100%\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u5206\u304b\u308a\u306b\u304f\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div>\n &lt;p class=\"p1\">\n \u30c6\u30ad\u30b9\u30c81\n &lt;\/p>\n &lt;p class=\"p2\">\n \u30c6\u30ad\u30b9\u30c82\n &lt;\/p>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n text-align:center;\n background:yellow;\n width:100%;\n height:100px;\n}\n.p1{\n background:skyblue;\n}\n.p2{\n background:skyblue;\n width:50%;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc9.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">\u5b50\u8981\u7d20\u304c\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408<\/h3>\n\n\n\n<h4 id=\"outline__2_2_1\" class=\"wp-block-heading\">\u5b50\u8981\u7d20\u306b\u300cmargin:0 auto;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u5b50\u8981\u7d20\u304c\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408\u306f\u3001\u5b50\u8981\u7d20\u306b\u300cmargin:0 auto;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5de6\u53f3\u306e\u4f59\u767d\u304c\u81ea\u52d5\u8abf\u6574\u3055\u308c\u308b\u305f\u3081\u3001\u5b50\u8981\u7d20\u304c\u89aa\u8981\u7d20\u306e\u6c34\u5e73\u65b9\u5411\u4e2d\u592e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u300cmargin-left:auto;\u300d\u3068\u300cmargin-right:auto;\u300d\u3068\u5206\u3051\u3066\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u304c\u3001\u307e\u3068\u3081\u3066\u66f8\u304f\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u5b50\u8981\u7d20\u306ewidth\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u6307\u5b9a\u306b\u5358\u4f4d\u300c%\u300d\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002PC\u753b\u9762\u3067\u6700\u5927\u5e45\u304c\u6c7a\u307e\u308b\u306e\u3067max-width\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u3046\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u5834\u5408\u3001\u5b50\u8981\u7d20\u306e\u4e2d\u8eab\u306b\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;div class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/div>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n background:yellow;\n height:100px;\n}\n.child{\n margin:0 auto;\n background:skyblue;\n width:200px;\n height:50px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc10.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__2_2_2\" class=\"wp-block-heading\">transform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3059\u308b<\/h4>\n\n\n<p>position\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u76f4\u63a5\u305d\u306e\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u5b50\u8981\u7d20\u306b\u300cleft:50%;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u89aa\u8981\u7d20\u306e\u5e45\u306e\u534a\u5206\u5de6\u306b\u79fb\u52d5\u3059\u308b\u305f\u3081\u3001\u89aa\u8981\u7d20\u306e\u771f\u3093\u4e2d\u306b\u5b50\u8981\u7d20\u306e\u5de6\u8fba\u304c\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u5b50\u8981\u7d20\u304c\u53f3\u5bc4\u308a\u306b\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u5b50\u8981\u7d20\u306e\u5272\u5408\u5206\u79fb\u52d5\u3055\u305b\u308btransform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u300ctransform:translateX(-50%);\u300d\u3067\u3001\u5b50\u8981\u7d20\u306e\u6a2a\u5e45\u306e\u534a\u5206\u3060\u3051\u5de6\u306b\u5bc4\u305b\u3089\u308c\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u304c\u771f\u3093\u4e2d\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;p class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/p>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n background-color:yellow;\n height:100px;\n}\n.child{\n position:relative;\n left:50%;\n width:200px;\n transform:translateX(-50%);\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc11.png\" class=\"post-img\">\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"W1jpVMKjeL\"><a href=\"https:\/\/techmania.jp\/blog\/css-position-absolute\/\">\u3010CSS\u3011position:absolute;\u3068\u306f\uff1f\u8981\u7d20\u3092\u597d\u304d\u306a\u4f4d\u7f6e\u306b\u914d\u7f6e\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;\u3010CSS\u3011position:absolute;\u3068\u306f\uff1f\u8981\u7d20\u3092\u597d\u304d\u306a\u4f4d\u7f6e\u306b\u914d\u7f6e\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/css-position-absolute\/embed\/#?secret=OA08sMUzlB#?secret=W1jpVMKjeL\" data-secret=\"W1jpVMKjeL\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408<\/h3>\n\n\n<p>\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408\u3082\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u3068\u540c\u69d8\u306b\u89aa\u8981\u7d20\u306b\u300ctext-align:center;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u3092\u89aa\u8981\u7d20\u306e\u6c34\u5e73\u65b9\u5411\u4e2d\u592e\u306b\u914d\u7f6e\u3067\u304d\u307e\u3059\u3002\u30d6\u30ed\u30c3\u30af\u306e\u5e45\u3092\u6c7a\u3081\u305a\u306b\u5185\u5bb9\u91cf\u306b\u5fdc\u3058\u305f\u5e45\u3067\u4e2d\u592e\u5bc4\u305b\u3059\u308b\u5834\u5408\u306a\u3069\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n<p>\u5b50\u8981\u7d20\u306e\u4e2d\u8eab\u307e\u3067text-align\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u52b9\u3044\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u30c6\u30ad\u30b9\u30c8\u3082\u4e2d\u592e\u5bc4\u308a\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;div class=\"child\">\n \u30c6\u30ad\u30b9\u30c81\n &lt;\/div>\n &lt;div class=\"child\">\n \u30c6\u30ad\u30b9\u30c82\n &lt;\/div>\n &lt;div class=\"child\">\n \u30c6\u30ad\u30b9\u30c83\n &lt;\/div>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n background:yellow;\n height:100px;\n text-align:center;\n}\n.child{\n display:inline-block;\n background:skyblue;\n width:200px;\n height:50px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc12.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__2_2_2\" class=\"wp-block-heading\">transform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3059\u308b<\/h4>\n\n\n<p>position\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u76f4\u63a5\u305d\u306e\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u300cleft:50%;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u89aa\u8981\u7d20\u306e\u5e45\u306e\u534a\u5206\u5de6\u306b\u79fb\u52d5\u3059\u308b\u305f\u3081\u3001\u89aa\u8981\u7d20\u306e\u771f\u3093\u4e2d\u306b\u5b50\u8981\u7d20\u306e\u5de6\u8fba\u304c\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u5b50\u8981\u7d20\u304c\u53f3\u5bc4\u308a\u306b\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u5b50\u8981\u7d20\u306e\u5272\u5408\u5206\u79fb\u52d5\u3055\u305b\u308btransform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u300ctransform:translateX(-50%);\u300d\u3067\u3001\u5b50\u8981\u7d20\u306e\u6a2a\u5e45\u306e\u534a\u5206\u3060\u3051\u5de6\u306b\u5bc4\u305b\u3089\u308c\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u304c\u771f\u3093\u4e2d\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n position:relative;\n background-color:yellow;\n height:100px;\n}\n.child{\n position:absolute;\n display:inline-block;\n left:50%;\n width:200px;\n transform:translateX(-50%);\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc13.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__2_4\" class=\"wp-block-heading\">\u3069\u306e\u8981\u7d20\u3067\u3082\u25cb<\/h3>\n\n\n\n<h4 id=\"outline__2_4_1\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300cdisplay:flex; justify-content:center;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u89aa\u8981\u7d20\u306b\u300cdisplay: flex;\u300d\u3068\u300cjustify-content: center;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3082\u5b50\u8981\u7d20\u3092\u89aa\u8981\u7d20\u306e\u6c34\u5e73\u65b9\u5411\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002justify-content\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u8981\u7d20\u306e\u6c34\u5e73\u65b9\u5411\u306e\u914d\u7f6e\u65b9\u6cd5\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div>\n &lt;span>\u30c6\u30ad\u30b9\u30c8&lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n display:flex;\n justify-content:center;\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc14.png\" class=\"post-img\">\n\n\n\n<blockquote class=\"wp-embedded-content\" data-secret=\"AQk4pZLj26\"><a href=\"https:\/\/techmania.jp\/blog\/css-flexbox\/\">CSS\u306eflexbox\u3068\u306f\uff1f\u8981\u7d20\u3092\u6a2a\u4e26\u3073\u306b\u3059\u308b\u65b9\u6cd5\u3092\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u89e3\u8aac<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&#8220;CSS\u306eflexbox\u3068\u306f\uff1f\u8981\u7d20\u3092\u6a2a\u4e26\u3073\u306b\u3059\u308b\u65b9\u6cd5\u3092\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u89e3\u8aac&#8221; &#8212; TechMania\" src=\"https:\/\/techmania.jp\/blog\/css-flexbox\/embed\/#?secret=mtZyuFY40E#?secret=AQk4pZLj26\" data-secret=\"AQk4pZLj26\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">\u5782\u76f4\u65b9\u5411\u3067\u4e2d\u592e\u63c3\u3048\u306b\u3059\u308b\u5834\u5408<\/h2>\n\n\n\n<h3 id=\"outline__3_1\" class=\"wp-block-heading\">\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\u306e\u5834\u5408<\/h3>\n\n\n\n<h4 id=\"outline__3_1_1\" class=\"wp-block-heading\">line-height\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u89aa\u8981\u7d20\u306e\u9ad8\u3055\u3068\u540c\u3058\u30b5\u30a4\u30ba\u306b\u3059\u308b<\/h4>\n\n\n<p>1\u884c\u30c6\u30ad\u30b9\u30c8\u306e\u5834\u5408\u306f\u300cline-height\u300d\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u3001\u89aa\u8981\u7d20\u306e\u3068\u540c\u3058\u9ad8\u3055\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5782\u76f4\u65b9\u5411\u306e\u4e2d\u592e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div>\n &lt;p>\u30c6\u30ad\u30b9\u30c8&lt;\/p>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n background:yellow;\n height:150px;\n}\np{\n line-height:150px;\n background:skyblue;\n width:200px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc15.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__3_1_2\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300cdisplay:table-cell; vertical-align:middle;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u300cdisplay:table-cell;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u8981\u7d20\u306e\u9ad8\u3055\u304c\u89aa\u8981\u7d20\u3068\u540c\u3058\u306b\u306a\u308a\u3001\u300cvertical-align:middle;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u8981\u7d20\u304c\u5782\u76f4\u65b9\u5411\u306e\u4e2d\u592e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n display:table-cell;\n vertical-align:middle;\n background-color:yellow;\n height:100px;\n width:300px;\n}\n.child{\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc18.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__3_2\" class=\"wp-block-heading\">\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408<\/h3>\n\n\n\n<h4 id=\"outline__3_1_2\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300cdisplay:table-cell; vertical-align:middle;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;p class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/p>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n display:table-cell;\n vertical-align:middle;\n background-color:yellow;\n height:100px;\n width:300px;\n}\n.child{\n background-color:skyblue;\n width:200px;\n height:50px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc20.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__2_2_2\" class=\"wp-block-heading\">transform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3059\u308b<\/h4>\n\n\n<p>position\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u76f4\u63a5\u305d\u306e\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u5b50\u8981\u7d20\u306b\u300ctop:50%;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u89aa\u8981\u7d20\u306e\u5e45\u306e\u534a\u5206\u4e0b\u65b9\u306b\u79fb\u52d5\u3059\u308b\u305f\u3081\u3001\u89aa\u8981\u7d20\u306e\u4e0a\u4e0b\u4e2d\u592e\u306b\u5b50\u8981\u7d20\u306e\u5de6\u8fba\u304c\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u5b50\u8981\u7d20\u304c\u4e0b\u5bc4\u308a\u306b\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u5b50\u8981\u7d20\u306e\u5272\u5408\u5206\u79fb\u52d5\u3055\u305b\u308btransform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u300ctransform:translateY(-50%);\u300d\u3067\u3001\u5b50\u8981\u7d20\u306e\u9ad8\u3055\u306e\u534a\u5206\u3060\u3051\u4e0a\u306b\u5bc4\u305b\u3089\u308c\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u304c\u4e0a\u4e0b\u4e2d\u592e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;p class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/p>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n background-color:yellow;\n height:100px;\n}\n.child{\n position:relative;\n top:50%;\n width:200px;\n transform:translateY(-50%);\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc17.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">\u30a4\u30f3\u30e9\u30a4\u30f3\u30d6\u30ed\u30c3\u30af\u8981\u7d20\u306e\u5834\u5408<\/h3>\n\n\n\n<h4 id=\"outline__3_1_2\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300cdisplay:table-cell; vertical-align:middle;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n background-color:yellow;\n display:table-cell;\n vertical-align:middle;\n height:150px;\n width:300px;\n}\n.child{\n display:inline-block;\n background-color:skyblue;\n width:200px;\n height:50px;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc19.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__3_3_2\" class=\"wp-block-heading\">transform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>position\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u76f4\u63a5\u305d\u306e\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u89aa\u8981\u7d20\u306b\u300cposition: relative;\u300d\u3001\u5b50\u8981\u7d20\u306b\u300cposition:absolute;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u89aa\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u57fa\u6e96\u306b\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u5b50\u8981\u7d20\u306b\u300ctop:50%;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u89aa\u8981\u7d20\u306e\u5e45\u306e\u534a\u5206\u4e0b\u65b9\u306b\u79fb\u52d5\u3059\u308b\u305f\u3081\u3001\u89aa\u8981\u7d20\u306e\u4e0a\u4e0b\u4e2d\u592e\u306b\u5b50\u8981\u7d20\u306e\u5de6\u8fba\u304c\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u5b50\u8981\u7d20\u304c\u4e0b\u5bc4\u308a\u306b\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u5b50\u8981\u7d20\u306e\u5272\u5408\u5206\u79fb\u52d5\u3055\u305b\u308btransform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u300ctransform:translateY(-50%);\u300d\u3067\u3001\u5b50\u8981\u7d20\u306e\u9ad8\u3055\u306e\u534a\u5206\u3060\u3051\u4e0a\u306b\u5bc4\u305b\u3089\u308c\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u304c\u4e0a\u4e0b\u4e2d\u592e\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n position:relative;\n background-color:yellow;\n height:100px;\n}\n.child{\n display:inline-block;\n position:absolute;\n top:50%;\n width:200px;\n transform:translateY(-50%);\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc16.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__2_4\" class=\"wp-block-heading\">\u3069\u306e\u8981\u7d20\u3067\u3082\u25cb<\/h3>\n\n\n\n<h4 id=\"outline__3_4_1\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300cdisplay:flex; align-items:center;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u89aa\u8981\u7d20\u306b\u300cdisplay:flex;\u300d\u3068\u300calign-items:center;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3082\u5b50\u8981\u7d20\u3092\u89aa\u8981\u7d20\u306e\u5782\u76f4\u65b9\u5411\u306e\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div>\n &lt;span>\u30c6\u30ad\u30b9\u30c8&lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n display:flex;\n align-items:center;\n background-color:yellow;\n height:100px;\n}\nspan{\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc5.png\" class=\"post-img\">\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">\u4e0a\u4e0b\u5de6\u53f3\u3067\u4e2d\u592e\u63c3\u3048\u306b\u3059\u308b\u5834\u5408<\/h2>\n\n\n<p>\u6c34\u5e73\u65b9\u5411\u30fb\u5782\u76f4\u65b9\u5411\u3067\u4e2d\u592e\u306b\u63c3\u3048\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n<h4 id=\"outline__4_4_1\" class=\"wp-block-heading\">\u5b50\u8981\u7d20\u306b\u300cmargin:auto;\u300d\u3067\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u89aa\u8981\u7d20\u306b\u300cposition:relative;\u300d\u3001\u5b50\u8981\u7d20\u306b\u300cposition:absolute;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u89aa\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u57fa\u6e96\u306b\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u5b50\u8981\u7d20\u306b\u300ctop:0; bottom:0; left:0; right:0;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u3092\u89aa\u8981\u7d20\u3068\u540c\u3058\u4f4d\u7f6e\u306b\u914d\u7f6e\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u5b50\u8981\u7d20\u306b\u300cmargin:auto;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u89aa\u8981\u7d20\u306e\u4e0a\u4e0b\u5de6\u53f3\u4e2d\u592e\u306b\u914d\u7f6e\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b50\u8981\u7d20\u306e\u9ad8\u3055\u3068\u5e45\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5185\u5bb9\u91cf\u306b\u3088\u3063\u3066\u306f\u306f\u307f\u51fa\u3057\u3066\u3057\u307e\u3046\u3053\u3068\u3082\u3042\u308b\u306e\u3067\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u306b\u306f\u9069\u3057\u307e\u305b\u3093\u3002\u53ef\u5909\u306e\u5834\u5408\u306f\u3001\u6b21\u306b\u7d39\u4ecb\u3059\u308b\u300cdisplay:flex;\u300d\u3092\u7528\u3044\u308b\u65b9\u6cd5\u3084transform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u7528\u3044\u308b\u65b9\u6cd5\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n position:relative;\n background-color:yellow;\n height:100px;\n}\n.child{\n position:absolute;\n display:inline-block;\n top:0;\n bottom:0;\n left:0;\n right:0;\n width:200px;\n height:50px;\n margin:auto;\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc4.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__4_4_2\" class=\"wp-block-heading\">\u89aa\u8981\u7d20\u306b\u300cdisplay:flex; justify-content:center; align-items:center;\u300d\u3092\u6307\u5b9a\u3059\u308b<\/h4>\n\n\n<p>\u89aa\u8981\u7d20\u306b\u300cdisplay:flex;\u300d\u3092\u6307\u5b9a\u3057\u3001\u300cjustify-content:center;\u300d\u3068\u300calign-items:center;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3082\u5b50\u8981\u7d20\u3092\u89aa\u8981\u7d20\u306e\u6c34\u5e73\u65b9\u5411\u30fb\u5782\u76f4\u65b9\u5411\u306e\u4e2d\u592e\u306b\u914d\u7f6e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div>\n &lt;span>\u30c6\u30ad\u30b9\u30c8&lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n display:flex;\n justify-content:center;\n align-items:center;\n background-color:yellow;\n height:100px;\n}\nspan{\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc3.png\" class=\"post-img\">\n\n\n\n<h4 id=\"outline__2_2_2\" class=\"wp-block-heading\">transform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3059\u308b<\/h4>\n\n\n<p>position\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u76f4\u63a5\u305d\u306e\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u89aa\u8981\u7d20\u306b\u300cposition:relative;\u300d\u3001\u5b50\u8981\u7d20\u306b\u300cposition:absolute;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u89aa\u8981\u7d20\u306e\u4f4d\u7f6e\u3092\u57fa\u6e96\u306b\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u300ctop:50%;\u300d\u300cleft:50%;\u300d\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u89aa\u8981\u7d20\u306e\u4e0a\u4e0b\u5de6\u53f3\u4e2d\u592e\u306b\u5b50\u8981\u7d20\u306e\u5de6\u8fba\u304c\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u5b50\u8981\u7d20\u304c\u4e0b\u30fb\u53f3\u5bc4\u308a\u306b\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u5b50\u8981\u7d20\u306e\u5272\u5408\u5206\u79fb\u52d5\u3055\u305b\u308btransform\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u300ctransform:translateY(-50%) translateX(-50%);\u300d\u3067\u3001\u5b50\u8981\u7d20\u306e\u9ad8\u3055\u30fb\u5e45\u306e\u534a\u5206\u3060\u3051\u4e0a\u30fb\u5de6\u306b\u5bc4\u305b\u3089\u308c\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u5b50\u8981\u7d20\u304c\u771f\u3093\u4e2d\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5e45\u3084\u9ad8\u3055\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u305f\u3081\u3001\u5024\u304c\u5909\u308f\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002\u30c7\u30a3\u30b9\u30d7\u30ec\u30a4\u306e\u5e45\u304c\u5909\u308f\u3063\u3066\u3082\u753b\u9762\u304c\u5d29\u308c\u306a\u3044\u30ea\u30ad\u30c3\u30c9\u30ec\u30a4\u30a2\u30a6\u30c8\u306eWeb\u30da\u30fc\u30b8\u3068\u76f8\u6027\u304c\u3044\u3044\u3067\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n &lt;span class=\"child\">\n \u30c6\u30ad\u30b9\u30c8\n &lt;\/span>\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\n position:relative;\n background-color:lightyellow;\n height:100px;\n}\n.child{\n position:absolute;\n display:inline-block;\n top:50%;\n left:50%;\n width:200px;\n height:50px;\n transform:translateY(-50%) translateX(-50%);\n background-color:skyblue;\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc2.png\" class=\"post-img\">\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">\u753b\u50cf<\/h2>\n\n\n<p>CSS\u3067\u753b\u50cf\u306e\u8868\u793a\u30b5\u30a4\u30ba\u3092\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u5d29\u308c\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u306b img\u8981\u7d20\u306ewidth\u53ca\u3073height\u3092\u6307\u5b9a\u3059\u308b\u306e\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u3010HTML\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"parent\">\n  &lt;img src=\"sample.png\" width=\"500\" height=\"500\" alt=\"moon\">\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>\u3010CSS\u5b9f\u884c\u30b3\u30fc\u30c9\u3011<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.parent{\r\n max-width:600px;\r\n border:2px solid #0000aa;\r\n padding:10px;\r\n height:180px;\r\n}\r\n \r\nimg{\r\n display:block;\r\n width:20%;\r\n height:auto;\r\n margin:0 auto;\r\n}<\/code><\/pre>\n\n\n<p><strong>\u3010\u5b9f\u884c\u7d50\u679c\u3011<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssc1.png\" class=\"post-img\">\n\n\n\n<h2 id=\"outline__6\" class=\"wp-block-heading\">CSS\u306e\u52c9\u5f37\u65b9\u6cd5\u306f\uff1f<\/h2>\n\n\n<p>\u66f8\u7c4d\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u5b66\u7fd2\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u6628\u4eca\u3067\u306f\u3001YouTube\u306a\u3069\u306e\u52d5\u753b\u30b5\u30a4\u30c8\u3084\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30a4\u30c8\u306a\u3069\u3082\u5145\u5b9f\u3057\u3066\u3044\u3066\u591a\u304f\u306e\u60c5\u5831\u304c\u624b\u306b\u5165\u308a\u307e\u3059\u3002<br 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class=\"post-img\">\n\n\n<p>IT\u30b9\u30ad\u30eb\u9700\u8981\u306e\u9ad8\u307e\u308a\u3068\u3068\u3082\u306b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3082\u5897\u3048\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u3069\u306e\u30b9\u30af\u30fc\u30eb\u306b\u901a\u3046\u3079\u304d\u304b\u8ff7\u3063\u3066\u3057\u307e\u3046\u4eba\u3082\u3044\u308b\u3067\u3057\u3087\u3046\u3002\u305d\u3093\u306a\u65b9\u306b\u306f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\uff01\u3053\u308c\u307e\u3067\u591a\u304f\u306eIT\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u80b2\u6210\u30fb\u8f29\u51fa\u3057\u3066\u304d\u305f\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u3067\u3082\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3092\u958b\u8b1b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<div class=\"bgBox\">\n<p><strong>\uff1c\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u306e\u7279\u5fb4\uff1e<\/strong><br 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