{"id":20231,"date":"2013-12-12T14:57:00","date_gmt":"2013-12-12T14:57:00","guid":{"rendered":"https:\/\/kiencang.net\/2013\/12\/12\/selector-before-trong-css\/"},"modified":"2013-12-12T14:57:00","modified_gmt":"2013-12-12T14:57:00","slug":"selector-before-trong-css","status":"publish","type":"post","link":"https:\/\/kiencang.net\/selector-before-trong-css\/","title":{"rendered":"Selector :before trong CSS"},"content":{"rendered":"\n<p><b>B\u1ed9 ch\u1ecdn before trong CSS<\/b> \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u00e8n n\u1ed9i dung b\u1ea5t k\u1ef3 tr\u01b0\u1edbc m\u1ed9t n\u1ed9i dung c\u1ee7a th\u1ebb n\u00e0o \u0111\u00f3.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5, CSS:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>p:before\n{\ncontent:\"(Ki\u1ebfn c\u00e0ng)\";\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p>HTML:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;h4&gt;B\u1ea1n \u0111\u1ecbnh l\u00e0m g\u00ec&lt;\/h4&gt;\n&lt;p&gt;M\u1ed9t ng\u00e0y \u0111\u1eb9p tr\u1eddi ph\u1ea3i kh\u00f4ng? Sao b\u1ea1n kh\u00f4ng \u0111i ch\u01a1i \u0111\u00e2u \u0111\u00f3? Sao l\u1ea1i ng\u1ed3i tr\u01b0\u1edbc m\u00e1y t\u00ednh h\u1ecdc HTML v\u00e0 CSS th\u1ebf n\u00e0y?! \u00c0 ha. \u00d4ng anh kh\u00f4ng ph\u1ea3i xo\u1eafn qu\u1ea9y!&lt;\/p&gt;<\/code><\/pre>\n\n\n\n<p>\u0110o\u1ea1n code \u1edf tr\u00ean s\u1ebd ch\u00e8n d\u00f2ng ch\u1eef (Ki\u1ebfn c\u00e0ng) tr\u01b0\u1edbc b\u1ea5t k\u1ef3 th\u1ebb p n\u00e0o.<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3<\/h2>\n\n\n\n<p>T\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 th\u00f4ng g\u1ed3m Chrome, FireFox, Opera, Safari v\u00e0 IE \u0111\u1ec1u h\u1ed7 tr\u1ee3&nbsp;Selector :before<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Danh s\u00e1ch b\u1ed9 ch\u1ecdn<\/h2>\n\n\n\n<ul><li>Selector :before (b\u00e0i b\u1ea1n \u0111ang \u0111\u1ecdc); <\/li><li><a href=\"https:\/\/kiencang.net\/selector-thuoc-tinh-trong-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">Selector thu\u1ed9c t\u00ednh<\/a>;<\/li><li><a href=\"https:\/\/kiencang.net\/lop-gia-first-letter-trong-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">L\u1edbp gi\u1ea3 (v\u00ed d\u1ee5 first-letter)<\/a>;<\/li><li><a href=\"https:\/\/kiencang.net\/id-class-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">Id v\u00e0 Class<\/a>;<\/li><li><a href=\"https:\/\/kiencang.net\/selector-after-trong-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">Selector :after<\/a>;<\/li><li><a href=\"https:\/\/kiencang.net\/bo-chon-hay-selector-trong-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">T\u1ed5ng h\u1ee3p c\u00e1c Selector<\/a>;<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ed9 ch\u1ecdn before trong CSS \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u00e8n n\u1ed9i dung b\u1ea5t k\u1ef3 tr\u01b0\u1edbc m\u1ed9t n\u1ed9i dung c\u1ee7a th\u1ebb n\u00e0o \u0111\u00f3. V\u00ed d\u1ee5, CSS: HTML: \u0110o\u1ea1n code \u1edf tr\u00ean s\u1ebd ch\u00e8n d\u00f2ng ch\u1eef (Ki\u1ebfn c\u00e0ng) tr\u01b0\u1edbc b\u1ea5t k\u1ef3 th\u1ebb p n\u00e0o. Tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3 T\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 th\u00f4ng g\u1ed3m Chrome, FireFox, &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[229],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Selector :before trong CSS &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/selector-before-trong-css\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Selector :before trong CSS &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"B\u1ed9 ch\u1ecdn before trong CSS \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u00e8n n\u1ed9i dung b\u1ea5t k\u1ef3 tr\u01b0\u1edbc m\u1ed9t n\u1ed9i dung c\u1ee7a th\u1ebb n\u00e0o \u0111\u00f3. V\u00ed d\u1ee5, CSS: HTML: \u0110o\u1ea1n code \u1edf tr\u00ean s\u1ebd ch\u00e8n d\u00f2ng ch\u1eef (Ki\u1ebfn c\u00e0ng) tr\u01b0\u1edbc b\u1ea5t k\u1ef3 th\u1ebb p n\u00e0o. Tr\u00ecnh duy\u1ec7t h\u1ed7 tr\u1ee3 T\u1ea5t c\u1ea3 c\u00e1c tr\u00ecnh duy\u1ec7t ph\u1ed5 th\u00f4ng g\u1ed3m Chrome, FireFox, &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/selector-before-trong-css\/\" \/>\n<meta property=\"og:site_name\" content=\"Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/anhducnguyen87\/\" \/>\n<meta property=\"article:published_time\" content=\"2013-12-12T14:57:00+00:00\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Selector :before trong CSS &#8226; Ki\u1ebfn c\u00e0ng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/kiencang.net\/selector-before-trong-css\/","og_locale":"vi_VN","og_type":"article","og_title":"Selector :before trong CSS &#8226; Ki\u1ebfn c\u00e0ng","og_description":"B\u1ed9 ch\u1ecdn before trong CSS \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u00e8n n\u1ed9i dung b\u1ea5t k\u1ef3 tr\u01b0\u1edbc m\u1ed9t n\u1ed9i dung c\u1ee7a th\u1ebb n\u00e0o \u0111\u00f3. V\u00ed d\u1ee5, CSS: HTML: \u0110o\u1ea1n code \u1edf tr\u00ean s\u1ebd ch\u00e8n d\u00f2ng ch\u1eef (Ki\u1ebfn c\u00e0ng) tr\u01b0\u1edbc b\u1ea5t k\u1ef3 th\u1ebb p n\u00e0o. 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