{"id":11869,"date":"2021-02-20T16:16:00","date_gmt":"2021-02-20T09:16:00","guid":{"rendered":"https:\/\/www.ducanhplus.com\/?p=11869"},"modified":"2021-02-20T16:16:00","modified_gmt":"2021-02-20T09:16:00","slug":"noi-tuyen-cac-css-nho","status":"publish","type":"post","link":"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/","title":{"rendered":"N\u1ed9i tuy\u1ebfn (inline) c\u00e1c CSS nh\u1ecf gi\u00fap t\u0103ng t\u1ed1c website"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6577d657cc695\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d657cc695\"  type=\"checkbox\" id=\"item-6577d657cc695\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/#CSS_noi_tuyen_la_gi\" title=\"CSS n\u1ed9i tuy\u1ebfn l\u00e0 g\u00ec?\">CSS n\u1ed9i tuy\u1ebfn l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/#Tai_sao_ban_su_dung_bien_phap_nay\" title=\"T\u1ea1i sao b\u1ea1n s\u1eed d\u1ee5ng bi\u1ec7n ph\u00e1p n\u00e0y?\">T\u1ea1i sao b\u1ea1n s\u1eed d\u1ee5ng bi\u1ec7n ph\u00e1p n\u00e0y?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/#Noi_tuyen_CSS_nhu_the_nao\" title=\"N\u1ed9i tuy\u1ebfn CSS nh\u01b0 th\u1ebf n\u00e0o\">N\u1ed9i tuy\u1ebfn CSS nh\u01b0 th\u1ebf n\u00e0o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/#Cai_nay_co_tac_dung_gi\" title=\"C\u00e1i n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng g\u00ec?\">C\u00e1i n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/#Loi_va_Hai\" title=\"L\u1ee3i v\u00e0 H\u1ea1i\">L\u1ee3i v\u00e0 H\u1ea1i<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"css-n\u1ed9i-tuy\u1ebfn-la-gi\"><span class=\"ez-toc-section\" id=\"CSS_noi_tuyen_la_gi\"><\/span>CSS n\u1ed9i tuy\u1ebfn l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<ul><li>CSS n\u1ed9i tuy\u1ebfn (inline) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c CSS \u0111\u01b0\u1ee3c \u0111\u1eb7t trong file HTML;<\/li><li>N\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t trong ph\u1ea7n \u0111\u1ea7u c\u1ee7a t\u00e0i li\u1ec7u, n\u1eb1m gi\u1eefa c\u00e1c th\u1ebb style;<\/li><li>N\u1ed9i tuy\u1ebfn CSS \u0111\u01a1n gi\u1ea3n l\u00e0 \u0111\u1eb7t CSS c\u1ee7a b\u1ea1n v\u00e0o trong file HTML thay v\u00ec \u0111\u1ec3 n\u00f3 \u1edf file CSS b\u00ean ngo\u00e0i (external &#8211; d\u1ea1ng .css).<\/li><\/ul>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"t\u1ea1i-sao-b\u1ea1n-s\u1eed-d\u1ee5ng-bi\u1ec7n-phap-nay\"><span class=\"ez-toc-section\" id=\"Tai_sao_ban_su_dung_bien_phap_nay\"><\/span>T\u1ea1i sao b\u1ea1n s\u1eed d\u1ee5ng bi\u1ec7n ph\u00e1p n\u00e0y?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>N\u1ed9i tuy\u1ebfn CSS l\u00e0m gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng file m\u00e0 tr\u00ecnh duy\u1ec7t ph\u1ea3i t\u1ea3i xu\u1ed1ng tr\u01b0\u1edbc \u0111\u1ec3 hi\u1ec3n th\u1ecb trang web c\u1ee7a b\u1ea1n. N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng m\u1ed9t file CSS ngo\u00e0i, tr\u00ecnh duy\u1ec7t tr\u01b0\u1edbc ti\u00ean ph\u1ea3i t\u1ea3i file HTML, sau \u0111\u00f3 m\u1edbi t\u1ea3i file CSS c\u1ee7a b\u1ea1n.<\/p>\n\n\n<p>Sau khi b\u1ea1n n\u1ed9i tuy\u1ebfn CSS, tr\u00ecnh duy\u1ec7t ch\u1ec9 ph\u1ea3i t\u1ea3i file HTML m\u00e0 th\u00f4i. T\u1ea3i m\u1ed9t file th\u00ec nhanh h\u01a1n so v\u1edbi t\u1ea3i hai file. Khi \u0111\u01b0\u1ee3c l\u00e0m \u0111\u00fang, n\u00f3 \u0111\u00f3ng g\u00f3p vai tr\u00f2 quan tr\u1ecdng trong gi\u1ea3i ph\u00e1p t\u1ed5ng th\u1ec3 c\u1ee7a vi\u1ec7c <a href=\"https:\/\/kiencang.net\/toi-uu-hoa-phan-phoi-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">t\u1ed1i \u01b0u h\u00f3a ph\u00e2n ph\u1ed1i CSS<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"n\u1ed9i-tuy\u1ebfn-css-nh\u01b0-th\u1ebf-nao\"><span class=\"ez-toc-section\" id=\"Noi_tuyen_CSS_nhu_the_nao\"><\/span>N\u1ed9i tuy\u1ebfn CSS nh\u01b0 th\u1ebf n\u00e0o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>B\u1ea1n ch\u1ec9 vi\u1ec7c copy n\u1ed9i dung c\u1ee7a file CSS ngo\u00e0i v\u00e0 paste n\u00f3 v\u00e0o gi\u1eefa th\u1ebb style trong ph\u1ea7n \u0111\u1ea7u (head) c\u1ee7a file HTML.<\/p>\n\n\n<p>N\u00f3 tr\u00f4ng gi\u1ed1ng nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n\n\n<pre class=\"wp-block-preformatted\"><code>&lt;style><\/code>\n<code>   CSS n\u1ed9i tuy\u1ebfn \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf \u0111\u00e2y.\n&lt;\/style><\/code><\/pre>\n\n\n<p>\u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n nh\u1edb l\u00e0 \u0111\u1eb7t th\u00f4ng tin n\u00e0y v\u00e0o trong ph\u1ea7n \u0111\u1ea7u c\u1ee7a HTML. B\u1ea1n ph\u1ea3i s\u1eed d\u1ee5ng th\u1ebb style HTML ch\u00ednh x\u00e1c. Copy v\u00e0 paste n\u1ed9i dung c\u1ee7a file CSS ngo\u00e0i \u0111\u1ec3 \u0111\u01b0a v\u00e0o trong gi\u1eefa th\u1ebb style, v\u00ed d\u1ee5:<\/p>\n\n\n<pre class=\"wp-block-preformatted\"><code>&lt;style>\nbody{margin:0;padding:0;background:#FFFFFF;font-family:Arial, Helvetica, sans-serif;font-size:15px;color:#555;}\nh1, h2, h3{margin:0;padding:0;font-weight:normal;color:#555;}\nh1{font-size:3.5em;}\nh2{font-size:2.4em;}\nh3{font-size:1.6em;}\np, ul, ol{margin-top:0;line-height:180%;}\na{text-decoration:underline;color:#FF2929;}\n&lt;\/style><\/code><\/pre>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"cai-nay-co-tac-d\u1ee5ng-gi\"><span class=\"ez-toc-section\" id=\"Cai_nay_co_tac_dung_gi\"><\/span>C\u00e1i n\u00e0y c\u00f3 t\u00e1c d\u1ee5ng g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>\u0110\u1eb7t CSS c\u1ee7a b\u1ea1n v\u00e0o trong ph\u1ea7n \u0111\u1ea7u c\u1ee7a HTML s\u1ebd gi\u00fap tr\u00ecnh duy\u1ec7t web gi\u1ea3m s\u1ed1 <a href=\"https:\/\/kiencang.net\/round-trip-time\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00f2ng l\u1eb7p kh\u1ee9 h\u1ed3i (round trip)<\/a> \u0111\u1ebfn m\u00e1y ch\u1ee7, v\u00ec b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i t\u1ea3i file CSS ri\u00eang r\u1ebd n\u1eb1m ngo\u00e0i th\u00ec tr\u00ecnh duy\u1ec7t m\u1edbi th\u1ea5y \u0111\u01b0\u1ee3c CSS, <strong>n\u00f3 th\u1ea5y \u0111\u01b0\u1ee3c CSS ngay khi t\u1ea3i HTML r\u1ed3i<\/strong>.<\/p>\n\n\n<p>N\u00f3 cho ph\u00e9p <a href=\"https:\/\/kiencang.net\/loai-bo-css-chan-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">gi\u1ea3m CSS ch\u1eb7n hi\u1ec3n th\u1ecb<\/a> v\u00e0 <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u1ea9y nhanh t\u1ed1c \u0111\u1ed9 t\u1ea3i trang web<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<h2 class=\"wp-block-heading\" id=\"l\u1ee3i-va-h\u1ea1i\"><span class=\"ez-toc-section\" id=\"Loi_va_Hai\"><\/span>L\u1ee3i v\u00e0 H\u1ea1i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p>Trong khi n\u00f3 gi\u1ea3m s\u1ed1 v\u00f2ng l\u1eb7p kh\u1ee9 h\u1ed3i \u0111\u1ebfn m\u00e1y ch\u1ee7 (c\u00e1i l\u1ee3i) th\u00ec \u0111i\u1ec1u n\u00e0y c\u0169ng khi\u1ebfn cho vi\u1ec7c file CSS c\u1ee7a b\u1ea1n s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c <a href=\"https:\/\/kiencang.net\/bo-nho-dem-trinh-duyet\/\" target=\"_blank\" rel=\"noreferrer noopener\">l\u01b0u v\u00e0o b\u1ed9 nh\u1edb \u0111\u1ec7m c\u1ee7a tr\u00ecnh duy\u1ec7t<\/a> (c\u00e1i h\u1ea1i).<\/p>\n\n\n<p>Khi b\u1ea1n s\u1eed d\u1ee5ng file CSS ngo\u00e0i, to\u00e0n b\u1ed9 file s\u1ebd \u0111\u01b0\u1ee3c cache (ghi nh\u1edb) b\u1edfi tr\u00ecnh duy\u1ec7t v\u00ec th\u1ebf n\u00f3 s\u1ebd kh\u00f4ng ph\u1ea3i m\u1ea5t c\u00f4ng t\u1ed1n s\u1ee9c th\u1ef1c hi\u1ec7n c\u00e1c b\u01b0\u1edbc t\u1ea3i l\u1eb7p l\u1ea1i khi ng\u01b0\u1eddi d\u00f9ng gh\u00e9 th\u0103m trang kh\u00e1c tr\u00ean c\u00f9ng website c\u1ee7a b\u1ea1n.<\/p>\n\n\n<p>Khi b\u1ea1n n\u1ed9i tuy\u1ebfn CSS, cache CSS s\u1ebd kh\u00f4ng t\u1ed3n t\u1ea1i, v\u00e0 CSS \u0111\u01b0\u1ee3c \u0111\u1ecdc v\u00e0 t\u1ea3i l\u1ea1i t\u1eeb \u0111\u1ea7u khi ng\u01b0\u1eddi d\u00f9ng gh\u00e9 th\u0103m trang kh\u00e1c tr\u00ean website. \u0110i\u1ec1u n\u00e0y s\u1ebd kh\u00f4ng th\u00e0nh v\u1ea5n \u0111\u1ec1 <strong>n\u1ebfu CSS c\u1ee7a b\u1ea1n nh\u1ecf v\u00e0 \u0111\u01a1n gi\u1ea3n<\/strong>. N\u1ebfu CSS c\u1ee7a b\u1ea1n l\u1edbn v\u00e0 ph\u1ee9c t\u1ea1p, th\u00ec b\u1ea1n n\u00ean c\u00e2n nh\u1eafc vi\u1ec7c \u0111\u1ec3 ch\u00fang th\u00e0nh file CSS t\u00e1ch ri\u00eang \u0111\u1ec3 t\u1eadn d\u1ee5ng \u0111\u01b0\u1ee3c l\u1ee3i th\u1ebf cache, \u0111\u1ea5y s\u1ebd l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n.<\/p>\n\n\n<p>Nhi\u1ec1u ng\u01b0\u1eddi n\u1ed9i tuy\u1ebfn CSS v\u00e0o trong trang ch\u1ee7 ho\u1eb7c trang landing pages c\u1ee7a h\u1ecd \u0111\u1ec3 trang c\u00f3 th\u1ec3 t\u1ea3i si\u00eau nhanh, v\u1edbi c\u00e1c trang c\u00f2n l\u1ea1i tr\u00ean website th\u00ec h\u1ecd s\u1eed d\u1ee5ng CSS ngo\u00e0i.<\/p>\n\n\n<p>Google khuy\u1ebfn ngh\u1ecb n\u1ed9i tuy\u1ebfn c\u00e1c CSS ch\u1eb7n hi\u1ec3n th\u1ecb&#8230;<\/p>\n\n\n<blockquote class=\"wp-block-quote\"><p>&#8220;\u0110\u1ec3 c\u00f3 hi\u1ec7u su\u1ea5t t\u1ed1t nh\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc n\u1ed9i tuy\u1ebfn c\u00e1c CSS quan tr\u1ecdng tr\u1ef1c ti\u1ebfp v\u00e0o t\u00e0i li\u1ec7u HTML. <\/p><p>\u0110i\u1ec1u n\u00e0y gi\u00fap lo\u1ea1i b\u1ecf c\u00e1c v\u00f2ng l\u1eb7p b\u1ed5 sung v\u00e0o trong <a href=\"https:\/\/kiencang.net\/duong-dan-hien-thi-trang-quan-trong\/\" target=\"_blank\" rel=\"noreferrer noopener\">tuy\u1ebfn hi\u1ec3n th\u1ecb quan tr\u1ecdng<\/a> v\u00e0 n\u1ebfu l\u00e0m ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e2n ph\u1ed1i \u0111\u01b0\u1eddng d\u1eabn quan tr\u1ecdng c\u00f3 \u0111\u1ed9 d\u00e0i &#8220;m\u1ed9t v\u00f2ng l\u1eb7p&#8221; n\u01a1i m\u00e0 <em>ch\u1ec9 HTML l\u00e0 t\u00e0i nguy\u00ean ch\u1eb7n hi\u1ec3n th\u1ecb<\/em>&#8220;.<\/p><\/blockquote>\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch ph\u00e2n ph\u1ed1i CSS, \u0111\u1ec3 bi\u1ebft c\u00e1ch CSS \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o tr\u00ean trang web n\u00e0o \u0111\u00f3.<\/p>\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft: Inline small CSS &#8211; T\u00e1c gi\u1ea3: Patrick Sexton \u2013 Website: Varvy)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CSS n\u1ed9i tuy\u1ebfn l\u00e0 g\u00ec? CSS n\u1ed9i tuy\u1ebfn (inline) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c CSS \u0111\u01b0\u1ee3c \u0111\u1eb7t trong file HTML; N\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t trong ph\u1ea7n \u0111\u1ea7u c\u1ee7a t\u00e0i li\u1ec7u, n\u1eb1m gi\u1eefa c\u00e1c th\u1ebb style; N\u1ed9i tuy\u1ebfn CSS \u0111\u01a1n gi\u1ea3n l\u00e0 \u0111\u1eb7t CSS c\u1ee7a b\u1ea1n v\u00e0o trong file HTML thay v\u00ec \u0111\u1ec3 n\u00f3 \u1edf file CSS b\u00ean &hellip;<\/p>\n","protected":false},"author":1,"featured_media":20446,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[262],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>N\u1ed9i tuy\u1ebfn (inline) c\u00e1c CSS nh\u1ecf gi\u00fap t\u0103ng t\u1ed1c website &#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\/noi-tuyen-cac-css-nho\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"N\u1ed9i tuy\u1ebfn (inline) c\u00e1c CSS nh\u1ecf gi\u00fap t\u0103ng t\u1ed1c website &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"CSS n\u1ed9i tuy\u1ebfn l\u00e0 g\u00ec? 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