{"id":5953,"date":"2018-12-18T10:17:55","date_gmt":"2018-12-18T01:17:55","guid":{"rendered":"https:\/\/y-com.info\/contents\/?p=5953"},"modified":"2021-06-24T10:18:34","modified_gmt":"2021-06-24T01:18:34","slug":"%e7%96%91%e4%bc%bc%e8%a6%81%e7%b4%a0before%e3%80%81after%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6%e4%bd%bf%e3%81%84%e3%81%be%e3%82%8f%e3%81%9b%e3%82%8b%e4%be%bf%e5%88%a9%e3%81%aa%e3%82%aa%e3%82%b7","status":"publish","type":"post","link":"https:\/\/y-com.info\/contents\/?p=5953","title":{"rendered":"\u7591\u4f3c\u8981\u7d20:before\u3001:after\u3092\u4f7f\u3063\u3066\u4f7f\u3044\u307e\u308f\u305b\u308b\u4fbf\u5229\u306a\u30aa\u30b7\u30e3\u30ec\u30c7\u30b6\u30a4\u30f3\u3092\u4f5c\u308a\u307e\u3057\u3087\u3046\u3002"},"content":{"rendered":"<p><span class=\"anchor\"><a id=\"anc_01\"><\/a><\/span><\/p>\n<section class=\"entry__section\">\n\u4eca\u5e74\u3082\u3042\u30682\u9031\u9593\u3001\u5e74\u672b\u3060\u3068\u3044\u3046\u306e\u306b\u306a\u3093\u3060\u304b\u307e\u3060\u3059\u3054\u304f\u5bd2\u3044\u3068\u3044\u3046\u611f\u3058\u3067\u306f\u7121\u3044\u3067\u3059\u3088\u306d\u3001\u7d05\u8449\u3082\u6240\u3005\u6b8b\u3063\u3066\u308b\u3088\u3046\u3067\u6628\u65e5\u3082\u304d\u308c\u3044\u306a\u7d05\u8449\u306e\u5834\u6240\u3092\u898b\u3064\u3051\u3066\u3073\u3063\u304f\u308a\u3057\u307e\u3057\u305f\u3002<br \/>\n\u3068\u306f\u3044\u3048\u3001\u6c17\u6e29\u304c\u4e0b\u304c\u3063\u3066\u304d\u3066\u3044\u308b\u304b\u3089\u304b\u50d5\u306e\u5468\u308a\u306b\u3082\u98a8\u90aa\u3072\u3044\u3066\u308b\u4eba\u591a\u3044\u306e\u3067\u3001\u81ea\u5206\u3082\u4f53\u8abf\u306b\u306f\u6c17\u3092\u3064\u3051\u306a\u3044\u3068\u3002<\/p>\n<p>\u4eca\u56de\u306f\u7591\u4f3c\u8981\u7d20\u3068\u3044\u3046\u3082\u306e\u306e\u3001:before\u3084:after\u3068\u3044\u3063\u305f\u3082\u306e\u3092\u7d39\u4ecb\u3002<br \/>\n\u3053\u306e:before\u3084:after\u306e\u8981\u7d20\u306f\u4f7f\u3046\u983b\u5ea6\u3082\u9ad8\u304f\u3001\u304b\u306a\u308a\u4fbf\u5229\u306a\u306e\u3067\u899a\u3048\u3066\u3057\u307e\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u3053\u306e\u7591\u4f3c\u8981\u7d20\u306f\u76ee\u7684\u306e\u8981\u7d20\u306e\u524d\u5f8c\u306b\u3001CSS\u3092\u4f7f\u3063\u3066\u5225\u306e\u8981\u7d20\u3092\u633f\u5165\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3082\u306e\u3067\u3059\u3002<br \/>\n\u4f8b\u3048\u3070\u3001\u30dc\u30bf\u30f3\u306b\u77e2\u5370\u30a2\u30a4\u30b3\u30f3\u3092\u4ed8\u3051\u305f\u3044\u3068\u304d\u3001\u30ea\u30b9\u30c8\u306e\u30b9\u30bf\u30a4\u30eb\u306b\u30a2\u30a4\u30b3\u30f3\u3092\u4f7f\u3044\u305f\u3044\u3068\u304d\u306a\u3069\u306b\u4fbf\u5229\u3067\u3001<br \/>\nHTML\u3068\u3057\u3066\u306e\u8981\u7d20\u306b\u306f\u30a2\u30a4\u30b3\u30f3\u306f\u542b\u307e\u308c\u306a\u3044\u3051\u308c\u3069\u3001CSS\u3067\u30a2\u30a4\u30b3\u30f3\u3092\u633f\u5165\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3093\u3067\u3059\u3002<\/p>\n<pre class=\"brush: xml; 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title: ; notranslate\" title=\"\">\r\nh1:before{\r\n  content:'\u524d\u3067\u3059';\r\n}\r\nh1:after{\r\n  content:'\u5f8c\u3067\u3059';\r\n}\r\n<\/pre>\n<p>\u30c7\u30e2\u3067\u306f\u308f\u304b\u308a\u3084\u3059\u304f\u6587\u5b57\u306b\u8272\u3092\u4ed8\u3051\u3066\u307f\u307e\u3059\u3002<\/p>\n<p data-height=\"300\" data-theme-id=\"26486\" data-slug-hash=\"GPjqyP\" data-default-tab=\"css,result\" data-user=\"hachidaime\" data-pen-title=\"GPjqyP\" class=\"codepen\">See the Pen <a href=\"https:\/\/codepen.io\/hachidaime\/pen\/GPjqyP\/\" class=\"broken_link\">GPjqyP<\/a> by Yoshimune (<a href=\"https:\/\/codepen.io\/hachidaime\">@hachidaime<\/a>) on <a href=\"https:\/\/codepen.io\">CodePen<\/a>.<\/p>\n<p><script async src=\"https:\/\/static.codepen.io\/assets\/embed\/ei.js\"><\/script><\/p>\n<p>\u7c21\u5358\u3067\u3057\u3087\u3002<br \/>\n\u5fdc\u7528\u3059\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u3067\u3059\u3002<\/p>\n<p data-height=\"300\" data-theme-id=\"26486\" data-slug-hash=\"GPjqxz\" data-default-tab=\"html,result\" data-user=\"hachidaime\" data-pen-title=\"GPjqxz\" class=\"codepen\">See the Pen <a href=\"https:\/\/codepen.io\/hachidaime\/pen\/GPjqxz\/\">GPjqxz<\/a> by Yoshimune (<a href=\"https:\/\/codepen.io\/hachidaime\">@hachidaime<\/a>) on <a href=\"https:\/\/codepen.io\">CodePen<\/a>.<\/p>\n<p><script async src=\"https:\/\/static.codepen.io\/assets\/embed\/ei.js\"><\/script><\/p>\n<p>\u7591\u4f3c\u8981\u7d20\u306f\u3001\u901a\u5e38\u306e\u8981\u7d20\u3068\u540c\u3058\u3088\u3046\u306b\u30b5\u30a4\u30ba\u3092\u5909\u3048\u305f\u308a\u3001\u80cc\u666f\u8272\u3092\u3064\u3051\u305f\u308aCSS\u3067\u3067\u304d\u308b\u4e8b\u306f\u4f55\u3067\u3082\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<br \/>\n\u306a\u306e\u3067\u3001\u7591\u4f3c\u8981\u7d20\u306b\u30b9\u30bf\u30a4\u30eb\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u4eca\u307e\u3067\u306f\u9762\u5012\u3060\u3063\u305f\u30aa\u30b7\u30e3\u30ec\u306a\u30c7\u30b6\u30a4\u30f3\u304c\u7c21\u5358\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4f7f\u3048\u308b\u306e\u306f\u30c7\u30b6\u30a4\u30f3\u3060\u3051\u3058\u3083\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n\u4f8b\u3048\u3070\u3001float\u306e\u56de\u308a\u8fbc\u307f\u3092\u89e3\u9664\u3059\u308b\u305f\u3081\u306eclearfix\u3068\u547c\u3070\u308c\u308b\u3082\u306e\u306a\u3069\u3082\u3001\u7591\u4f3c\u8981\u7d20\u3067\u7c21\u5358\u306b\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"brush: css; 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