{"id":7309,"date":"2024-06-28T19:19:26","date_gmt":"2024-06-28T10:19:26","guid":{"rendered":"https:\/\/techmania.jp\/blog\/?p=7309"},"modified":"2024-06-28T19:19:36","modified_gmt":"2024-06-28T10:19:36","slug":"css-border","status":"publish","type":"post","link":"https:\/\/techmania.jp\/blog\/css-border\/","title":{"rendered":"\u3010CSS\u5165\u9580\u3011border\uff08\u67a0\u7dda\uff09\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3092\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u89e3\u8aac\uff01"},"content":{"rendered":"\n<h2 id=\"outline__1\" class=\"wp-block-heading\">CSS\u306eborder\u3068\u306f<\/h2>\n\n\n<p>CSS\u3067\u306f\u8981\u7d20\u306b\u67a0\u7dda\u3092\u3064\u3051\u308bborder\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002border\u30d7\u30ed\u30d1\u30c6\u30a3\u306fHTML\u8981\u7d20\u306b\u67a0\u7dda\u3092\u4ed8\u3051\u308bCSS\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u67a0\u7dda\u3092\u3064\u3051\u308b\u3053\u3068\u3067\u3001HTML\u8981\u7d20\u3092\u5f37\u8abf\u3059\u308b\u5834\u5408\u3084\u3001\u4f4d\u7f6e\u306e\u8abf\u6574\u6642\u306b\u8996\u899a\u7684\u306b\u5206\u304b\u308a\u3084\u3059\u304f\u3059\u308b\u5834\u5408\u306a\u3069\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n<p><strong>\u57fa\u672c\u69cb\u6587<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>\u30bb\u30ec\u30af\u30bf{\n border:\u7dda\u306e\u592a\u3055,\u7dda\u306e\u7a2e\u985e,\u7dda\u306e\u8272;\n}<\/code><\/pre>\n\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;div>\n test\n&lt;\/div><\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n border:1px solid #FF0000;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb1.png\" class=\"post-img\">\n\n\n<p>\u8981\u7d20\u306b\u67a0\u7dda\u304c\u3064\u304d\u307e\u3057\u305f\u3002\u3053\u306e\u3088\u3046\u306b\u3001border\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u67a0\u7dda\u306e\u592a\u3055\u3001\u67a0\u7dda\u306e\u7a2e\u985e\u3001\u67a0\u7dda\u306e\u8272\u3092\u6307\u5b9a\u53ef\u80fd\u3067\u3059\u3002\u306a\u304a\u3001\u305d\u308c\u3089\u306e\u9806\u756a\u306f\u9806\u4e0d\u540c\u3067\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n<div style=\"margin-top:4%;\"><a href=\"https:\/\/techmania.jp\/\"><p style=\"text-align:center; font-weight:bold; color:black; text-decoration:underline black;\">\u3042\u306a\u305f\u306e\u3054\u5e0c\u671b\u306b\u6cbf\u3063\u305f\u6848\u4ef6\u304c<span style=\"color: red;\">\u5fc5\u305a<\/span>\u898b\u3064\u304b\u308a\u307e\u3059<br>\u3010\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u5411\u3051\u3011<span style=\"color: red;\">\u9ad8\u53ce\u5165<\/span><span style=\"color: black;\">\u30fb<\/span><span style=\"color: blue;\">\u597d\u5f85\u9047<\/span><span style=\"color: black;\">\u306e\u6848\u4ef6\u3092\u3054\u7d39\u4ecb<\/span>\n<\/p><\/a>\n<\/div>\n\n<div style=\"text-align:center; margin-top:1%;\"><a href=\"https:\/\/techmania.jp\/\"><img decoding=\"async\" style=\"filter:drop-shadow(0px 0px 2px rgba(0,0,0,0.3));width:300px;\" alt=\"TECH MANIA \u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\" src=\"https:\/\/techmania.jp\/blog\/wp-content\/uploads\/2024\/02\/stop.png\"><\/a>\n<\/div>\n\n<div style=\"margin-top:0%;\"><a href=\"https:\/\/techmania.jp\/\">\n<p style=\"text-align:center; font-weight:bold; color:black; text-decoration:underline black;\">\u226b\u307e\u305a\u306f\u7c21\u5358<span style=\"color: blue;\">60<\/span>\u79d2\u3067<span style=\"color: red;\">\u7121\u6599\u304a\u554f\u3044\u5408\u308f\u305b<\/span>\u304b\u3089\u226a\n<\/p><\/a>\n<\/div>\n\n\n\n<h2 id=\"outline__2\" class=\"wp-block-heading\">border\u306f\u8981\u7d20\u306e\u5883\u754c<\/h2>\n\n\n<p>border\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u8981\u7d20\u306e\u5883\u754c\u3092\u8868\u73fe\u3057\u307e\u3059\u3002border\u3068\u8981\u7d20\u3001\u4f59\u767d\u306e\u69cb\u9020\u306b\u3064\u3044\u3066\u306f\u4e0b\u56f3\u3067\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/pm5.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__2_1\" class=\"wp-block-heading\">\u67a0\u7dda\u306e\u8907\u6570\u9805\u76ee\u3092\u4e00\u62ec\u3067\u6307\u5b9a\u3059\u308b\u300cborder\u300d\u30d7\u30ed\u30d1\u30c6\u30a3<\/h3>\n\n\n<p>\u300cborder\u300d\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u300cborder-width\uff08\u67a0\u7dda\u306e\u592a\u3055\uff09\u300d\u3001\u300cborder-style\uff08\u67a0\u7dda\u306e\u7a2e\u985e\uff09\u300d\u3001\u300cborder-color\uff08\u67a0\u7dda\u306e\u8272\uff09\u300d\u306e\u8907\u6570\u306e\u30b9\u30bf\u30a4\u30eb\u6307\u5b9a\u65b9\u6cd5\u3092\u4e00\u62ec\u3067\u6307\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u306a\u304a\u3001\u3053\u308c\u3089\u306f\u9806\u4e0d\u540c\u3067\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>border\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u3001\u6b21\u306e3\u3064\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4e00\u62ec\u3067\u6307\u5b9a\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<ul>\n<li>border-width\uff08\u67a0\u7dda\u306e\u592a\u3055\uff09<\/li>\n<li>border-style\uff08\u67a0\u7dda\u306e\u7a2e\u985e\uff09<\/li>\n<li>border-color\uff08\u67a0\u7dda\u306e\u8272\uff09<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306b\u8907\u6570\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u307e\u3068\u3081\u3066\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u3092\u300c\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u300d\u3068\u3044\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3067\u8a18\u8ff0\u3067\u304d\u308bborder\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u3088\u3046\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u300c\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u30d7\u30ed\u30d1\u30c6\u30a3\u300d\u3068\u3044\u3044\u307e\u3059\u3002<\/p>\n<p><strong>CSS\u8a18\u8ff0\u4f8b<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border:thin botted #FF0000;<\/code><\/pre>\n\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body&gt;\n &lt;div class=\"border\"&gt;\n  test\n &lt;\/div&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:dotted thin #FF0000;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/tb5.png\" class=\"post-img\">\n\n\n\n<h3 id=\"outline__2_2\" class=\"wp-block-heading\">\u67a0\u7dda\u306e\u592a\u3055\u3092\u6307\u5b9a\u3059\u308b\u300cborder-width\u300d\u30d7\u30ed\u30d1\u30c6\u30a3<\/h3>\n\n\n<p>\u67a0\u7dda\u306e\u592a\u3055\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u3001border-width\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p><strong>CSS\u8a18\u8ff0\u4f8b<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border-width:30%;<\/code><\/pre>\n\n\n<p>\u6307\u5b9a\u306b\u306f\u300cpx\u300d\u3001\u300c%\u300d\u3001\u300cpt\u300d\u3001\u300cem\u300d\u3001\u300cin\uff08inch\uff09\u300d\u306a\u3069\u306e\u5358\u4f4d\u3067\u6570\u5024\u3067\u6307\u5b9a\u53ef\u80fd\u306a\u307b\u304b\u3001\u7d30\u7dda\u3092\u6307\u3059\u300cthick\u300d\u3001\u6a19\u6e96\u7dda\u306e\u300cmedium\u300d\u3001\u592a\u7dda\u306e\u300cthin\u300d\u306a\u3069\u3068\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u300cborder-top-width\u300d\u3067\u4e0a\u7dda\u3001\u300cborder-bottom-width\u300d\u3067\u4e0b\u7dda\u3001\u300cborder-left-width\u300d\u3067\u5de6\u7dda\u3001\u300cborder-right-width\u300d\u3067\u53f3\u7dda\u3092\u500b\u5225\u306b\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u306a\u304a\u3001\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u306f\u975e\u5bfe\u5fdc\u3067\u3042\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><strong>border-width\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u6307\u5b9a\u53ef\u80fd\u306a\u5024<\/strong><\/p>\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>\u6570\u5024\u3067\u6307\u5b9a\u3059\u308b\u5834\u5408<\/td><td>px\u3084%\u306a\u3069<\/td><\/tr><tr><td>\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u6307\u5b9a\u3059\u308b\u5834\u5408<\/td><td>thin\uff08\u7d30\uff09\u3001medium\uff08\u4e2d\uff09\u3001thick\uff08\u592a\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body&gt;\n &lt;div class=\"border\"&gt;\n  test\n &lt;\/div&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border-width:thin;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/tb3.png\" class=\"post-img\">\n\n\n<p>\u500b\u5225\u306e\u65b9\u5411\u306e\u67a0\u7dda\u306e\u592a\u3055\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>border-top-width<\/li>\n<li>border-right-width<\/li>\n<li>border-bottom-width<\/li>\n<li>border-left-width<\/li>\n<\/ul>\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body&gt;\n &lt;div class=\"border\"&gt;\n  test\n &lt;\/div&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-top-width:thin;\n border-right-width:medium;\n border-bottom-width:thick;\n border-left-width:3px;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb5.png\" class=\"post-img\">\n\n\n<p>\u307e\u305f\u3001\u6b21\u306e\u3088\u3046\u306b\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3067\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-width:thin medium thick 3px;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb5.png\" class=\"post-img\">\n\n\n<p><strong>\u2714\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border-width:\u4e0a \u4e0b \u5de6 \u53f3;\nborder-width:\u4e0a \u5de6\u53f3 \u4e0b;\nborder-width:\u4e0a\u4e0b \u5de6\u53f3;<\/code><\/pre>\n\n\n\n<h3 id=\"outline__2_3\" class=\"wp-block-heading\">\u67a0\u7dda\u306e\u7a2e\u985e\u3092\u6307\u5b9a\u3059\u308b\u300cborder-style\u300d\u30d7\u30ed\u30d1\u30c6\u30a3<\/h3>\n\n\n<p>\u67a0\u7dda\u306e\u7a2e\u985e\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u3001border-style\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p><strong>CSS\u8a18\u8ff0\u4f8b<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border-style:solid;<\/code><\/pre>\n\n\n<p>\u6307\u5b9a\u3059\u308b\u969b\u306f\u5fc5\u305a\u5f8c\u307b\u3069\u7d39\u4ecb\u3059\u308b\u300cborder-width\u300d\u30d7\u30ed\u30d1\u30c6\u30a3\u3068\u4f75\u305b\u3066\u4f7f\u7528\u3057\u307e\u3059\u3002\u306a\u304a\u3001\u300cdotted\u300d\u3068\u300cdashed\u300d\u306f\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u306f\u975e\u5bfe\u5fdc\u3067\u3042\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><strong>border-width\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u6307\u5b9a\u53ef\u80fd\u306a\u5024<\/strong><\/p>\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>none<\/strong><\/td><td>\u975e\u8868\u793a\uff08\u521d\u671f\u5024\uff09<\/td><\/tr><tr><td><strong>solid<\/strong><\/td><td>1\u672c\u7dda<\/td><\/tr><tr><td><strong>double<\/strong><\/td><td>2\u672c\u7dda<\/td><\/tr><tr><td><strong>dotted<\/strong><\/td><td>\u70b9\u7dda<\/td><\/tr><tr><td><strong>dashed<\/strong><\/td><td>\u7834\u7dda<\/td><\/tr><tr><td><strong>groove<\/strong><\/td><td>\u8c37\u7dda<\/td><\/tr><tr><td><strong>ridge<\/strong><\/td><td>\u5c71\u7dda<\/td><\/tr><tr><td><strong>inset<\/strong><\/td><td>\u5185\u90e8\u304c\u7aaa\u3093\u3060\u67a0\u7dda<\/td><\/tr><tr><td><strong>outset<\/strong><\/td><td>\u5185\u90e8\u304c\u9686\u8d77\u3057\u305f\u67a0\u7dda<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body>\n &lt;div class=\"none\">\n  test\n &lt;\/div>\n\n &lt;div class=\"solid\">\n  test\n &lt;\/div>\n\n &lt;div class=\"double\">\n  test\n &lt;\/div>\n\n &lt;div class=\"dotted\">\n  test\n &lt;\/div>\n\n &lt;div class=\"dashed\">\n  test\n &lt;\/div>\n\n &lt;div class=\"groove\">\n  test\n &lt;\/div>\n\n &lt;div class=\"ridge\">\n  test\n &lt;\/div>\n\n &lt;div class=\"inset\">\n  test\n &lt;\/div>\n\n &lt;div class=\"outset\">\n  test\n &lt;\/div>\n&lt;\/body><\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>div{\n border:2px;\n margin-bottom:10px;\n}\n.none{\n border-style:none;\n}\n.solid{\n border-style:solid;\n}\n.double{\n border-style:double;\n}\n.dotted{\n border-style:dotted;\n}\n.dashed{\n border-style:dashed;\n}\n.groove{\n border-style:groove;\n}\n.ridge{\n border-style:ridge;\n}\n.inset{\n border-style:inset;\n}\n.outset{\n border-style:outset;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb3.png\" class=\"post-img\">\n\n\n<p>\u500b\u5225\u306e\u65b9\u5411\u306e\u67a0\u7dda\u306e\u7a2e\u985e\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>border-top-style<\/li>\n<li>border-right-style<\/li>\n<li>border-bottom-style<\/li>\n<li>border-left-style<\/li>\n<\/ul>\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body&gt;\n &lt;div class=\"border\"&gt;\n  test\n &lt;\/div&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-top-style:none;\n border-right-style:solid;\n border-bottom-style:double;\n border-left-style:dotted;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb4.png\" class=\"post-img\">\n\n\n<p>\u307e\u305f\u3001\u6b21\u306e\u3088\u3046\u306b\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3067\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-style:none solid double dotted;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb4.png\" class=\"post-img\">\n\n\n<p><strong>\u2714\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border-style:\u4e0a \u4e0b \u5de6 \u53f3;\nborder-style:\u4e0a \u5de6\u53f3 \u4e0b;\nborder-style:\u4e0a\u4e0b \u5de6\u53f3;<\/code><\/pre>\n\n\n\n<h3 id=\"outline__2_4\" class=\"wp-block-heading\">\u67a0\u7dda\u306e\u8272\u3092\u6307\u5b9a\u3059\u308b\u300cborder-color\u300d\u30d7\u30ed\u30d1\u30c6\u30a3<\/h3>\n\n\n<p>\u67a0\u7dda\u306e\u8272\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u3001border-color\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p><strong>CSS\u8a18\u8ff0\u4f8b<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border-color:#FF0000;<\/code><\/pre>\n\n\n<p>\u6307\u5b9a\u306f16\u9032\u6570\u306e\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9\u307e\u305f\u306f\u30ab\u30e9\u30fc\u30cd\u30fc\u30e0\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p><strong>border-color\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u6307\u5b9a\u53ef\u80fd\u306a\u5024<\/strong><\/p>\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>16\u9032\u6570\u306e\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9\u3067\u6307\u5b9a<\/td><td>#00FF00\u3001#111111\u306a\u3069<\/td><\/tr><tr><td>\u30ab\u30e9\u30fc\u30cd\u30fc\u30e0\u3067\u6307\u5b9a<\/td><td>red\u3001blue\u306a\u3069<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body&gt;\n &lt;div class=\"border\"&gt;\n  test\n &lt;\/div&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border-color:#FF0000;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/tb4.png\" class=\"post-img\">\n\n\n<p>\u7279\u306b\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n<p>\u500b\u5225\u306e\u65b9\u5411\u306e\u67a0\u7dda\u306e\u8272\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>border-top-color<\/li>\n<li>border-right-color<\/li>\n<li>border-bottom-color<\/li>\n<li>border-left-color<\/li>\n<\/ul>\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body&gt;\n &lt;div class=\"border\"&gt;\n  test\n &lt;\/div&gt;\n&lt;\/body&gt;<\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-top-color:#000;\n border-right-color:#f00;\n border-bottom-color:#0f0;\n border-left-color:#00f;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb2.png\" class=\"post-img\">\n\n\n<p>\u307e\u305f\u3001\u6b21\u306e\u3088\u3046\u306b\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3067\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-color:#000 #f00 #0f0 #00f;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb2.png\" class=\"post-img\">\n\n\n<p><strong>\u2714\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>border-color:\u4e0a \u4e0b \u5de6 \u53f3;\nborder-color:\u4e0a \u5de6\u53f3 \u4e0b;\nborder-color:\u4e0a\u4e0b \u5de6\u53f3;<\/code><\/pre>\n\n\n\n<h2 id=\"outline__3\" class=\"wp-block-heading\">border\u3092\u8868\u793a\uff0f\u975e\u8868\u793a\u306b\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n<p>transparent\u3068\u3044\u3046\u5024\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u67a0\u7dda\u3092\u975e\u8868\u793a\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body>\n &lt;div class=\"border\">\n  test\n &lt;\/div>\n&lt;\/body><\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.border{\n border:2px solid;\n border-color:#000 transparent transparent #00f;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb6.png\" class=\"post-img\">\n\n\n\n<h2 id=\"outline__4\" class=\"wp-block-heading\">\u3010\u304a\u307e\u3051\u3011border\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u898b\u51fa\u3057\u3092\u4f5c\u6210\u3059\u308b<\/h2>\n\n\n<p><strong>HTML\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>&lt;body>\n &lt;h2 class=\"left-border\">\n  test\n &lt;\/h2>\n\n &lt;h2 class=\"left-bottom-border\">\n  test\n &lt;\/h2>\n&lt;\/body><\/code><\/pre>\n\n\n<p><strong>CSS\u5b9f\u884c\u30b3\u30fc\u30c9<\/strong><\/p>\n\n\n<pre class=\"wp-block-code\"><code>.left-border{\n border-left:5px solid gray;\n padding-left:5px;\n}\n.left-bottom-border{\n border-left:5px solid gray;\n border-bottom:2px solid gray;\n padding-left:5px;\n}<\/code><\/pre>\n\n\n<p><strong>\u5b9f\u884c\u7d50\u679c<\/strong><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/cssb7.png\" class=\"post-img\">\n\n\n\n<h2 id=\"outline__5\" class=\"wp-block-heading\">CSS\u306e\u5b66\u7fd2\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 \/>\u305d\u3057\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306b\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3059\u308b\u306b\u306f\u3001\u77e5\u8b58\u3092\u3064\u3051\u306a\u304c\u3089\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u307f\u308b\u306a\u3069\u3001\u30a4\u30f3\u30d7\u30c3\u30c8\u3068\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u7279\u306b\u72ec\u5b66\u306e\u5834\u5408\u306f\u3001\u6709\u8b58\u8005\u306b\u8cea\u554f\u304c\u3067\u304d\u305f\u308a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u3082\u3089\u3048\u308b\u3088\u3046\u306a\u74b0\u5883\u304c\u3042\u308b\u3068\u3001\u7406\u89e3\u5ea6\u304c\u6df1\u307e\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u305f\u3060\u3001CSS\u306b\u9650\u3089\u305a\u3001IT\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u308b\u969b\u3001\u3069\u3046\u3057\u3066\u3082\u8ab2\u984c\u306b\u3076\u3064\u304b\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u7279\u306b\u72ec\u5b66\u3060\u3068\u3001\u308f\u304b\u3089\u306a\u3044\u90e8\u5206\u3092\u30d7\u30ed\u306b\u8cea\u554f\u3067\u304d\u308b\u6a5f\u4f1a\u3092\u78ba\u4fdd\u3057\u306b\u304f\u304f\u3001\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u304c\u7d9a\u304d\u306b\u304f\u3044\u3068\u3044\u3046\u5074\u9762\u304c\u3042\u308a\u307e\u3059\u3002\u72ec\u5b66\u3067\u30e2\u30c1\u30d9\u30fc\u30b7\u30e7\u30f3\u3092\u7dad\u6301\u3059\u308b\u81ea\u4fe1\u304c\u306a\u3044\u4eba\u306b\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u3068\u3044\u3046\u624b\u3082\u3042\u308a\u307e\u3059\u3002\u8cbb\u7528\u306f\u639b\u304b\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u5206\u30b9\u30ad\u30eb\u3092\u8eab\u306b\u3064\u3051\u3084\u3059\u3044\u3067\u3059\u3002\u3057\u3063\u304b\u308a\u3068\u77e5\u8b58\u30fb\u30b9\u30ad\u30eb\u3092\u7fd2\u5f97\u3057\u3066\u5b9f\u8df5\u306b\u6d3b\u304b\u3057\u305f\u3044\u3068\u3044\u3046\u4eba\u306f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n<p><span class=\"markerYellow\"><strong>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30af\u30fc\u30eb\u306a\u3089\u30c6\u30c3\u30af\u30de\u30cb\u30a2\u304c\u304a\u3059\u3059\u3081\uff01<\/strong><\/span><\/p>\n\n\n<img decoding=\"async\" src=\"https:\/\/web-img.rensa.jp.net\/rensa\/images\/techmania\/thumbnail\/images\/yuudou.png\" 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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