{"id":11609,"date":"2021-02-08T08:33:00","date_gmt":"2021-02-08T01:33:00","guid":{"rendered":"https:\/\/www.ducanhplus.com\/?p=11609"},"modified":"2022-08-06T07:51:14","modified_gmt":"2022-08-06T00:51:14","slug":"giam-thieu-css","status":"publish","type":"post","link":"https:\/\/kiencang.net\/giam-thieu-css\/","title":{"rendered":"Minify CSS hay gi\u1ea3m thi\u1ec3u k\u00edch c\u1ee1 CSS c\u00f3 t\u00e1c d\u1ee5ng g\u00ec?"},"content":{"rendered":"\n<p>V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: n\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c theme \u0111\u01b0\u1ee3c vi\u1ebft t\u1ed1t th\u00ec minify CSS \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft ngay t\u1eeb b\u01b0\u1edbc \u0111\u1ea7u. Ngo\u00e0i ra c\u00e1c plugin cache c\u0169ng h\u1ed7 tr\u1ee3 t\u1ed1t vi\u1ec7c n\u00e0y. Th\u00eam v\u00e0o \u0111\u00f3 n\u1eefa c\u00e1c gi\u1ea3i ph\u00e1p n\u00e9n m\u1eb7c \u0111\u1ecbnh (c\u00f3 \u1edf h\u1ea7u h\u1ebft c\u00e1c hosting) c\u0169ng l\u00e0m v\u1ea5n \u0111\u1ec1 n\u00e0y ch\u1eb3ng c\u00f3 g\u00ec nghi\u00eam tr\u1ecdng. N\u00ean b\u00e0i vi\u1ebft n\u00e0y s\u1ebd cho b\u1ea1n c\u00e1i nh\u00ecn l\u00fd thuy\u1ebft nhi\u1ec1u h\u01a1n, c\u00f2n th\u1ef1c t\u1ebf trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i l\u00e0m g\u00ec \u0111\u00e2u. C\u1ee9 \u0111\u1ec3 y\u00ean cho c\u00e1c c\u00f4ng c\u1ee5 th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 c\u1ee7a n\u00f3!<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\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-6577d658038c8\" ><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-6577d658038c8\"  type=\"checkbox\" id=\"item-6577d658038c8\"><\/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\/giam-thieu-css\/#1_Minify_CSS_la_gi\" title=\"#1. Minify CSS l\u00e0 g\u00ec?\">#1. Minify CSS 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\/giam-thieu-css\/#2_Giao_dien_WordPress_va_CSS\" title=\"#2. Giao di\u1ec7n WordPress v\u00e0 CSS\">#2. Giao di\u1ec7n WordPress v\u00e0 CSS<\/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\/giam-thieu-css\/#3_Minify_co_nghia_la_lam_cho_no_nho_hon\" title=\"#3. Minify c\u00f3 ngh\u0129a l\u00e0 l\u00e0m cho n\u00f3 nh\u1ecf h\u01a1n\">#3. Minify c\u00f3 ngh\u0129a l\u00e0 l\u00e0m cho n\u00f3 nh\u1ecf h\u01a1n<\/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\/giam-thieu-css\/#4_No_khong_chi_la_WordPress_ma_thoi\" title=\"#4. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 WordPress m\u00e0 th\u00f4i\">#4. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 WordPress m\u00e0 th\u00f4i<\/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\/giam-thieu-css\/#5_Lam_the_nao_de_giam_thieu_cac_ma_CSS_da_ton_tai\" title=\"#5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c m\u00e3 CSS \u0111\u00e3 t\u1ed3n t\u1ea1i\">#5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c m\u00e3 CSS \u0111\u00e3 t\u1ed3n t\u1ea1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kiencang.net\/giam-thieu-css\/#6_Vi_du_ve_giam_thieu_CSS\" title=\"#6. V\u00ed d\u1ee5 v\u1ec1 gi\u1ea3m thi\u1ec3u CSS\">#6. V\u00ed d\u1ee5 v\u1ec1 gi\u1ea3m thi\u1ec3u CSS<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"minify-css-la-gi\"><span class=\"ez-toc-section\" id=\"1_Minify_CSS_la_gi\"><\/span>#1. Minify CSS l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Minify CSS \u0111\u00fang nh\u01b0 t\u00ean c\u1ee7a n\u00f3 ng\u1ee5 \u00fd, n\u00f3 l\u00e0m cho c\u00e1c \u0111o\u1ea1n m\u00e3 ch\u1ec9 d\u1eabn CSS nh\u1ecf g\u1ecdn h\u01a1n. <\/p>\n\n\n\n<p>Khi l\u1ea7n \u0111\u1ea7u ti\u00ean t\u00f4i vi\u1ebft b\u00e0i n\u00e0y c\u00e1ch \u0111\u00e2y v\u00e0i n\u0103m, t\u00f4i ch\u1ee7 y\u1ebfu ngh\u0129 v\u1ec1 c\u00e1ch l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 c\u00e1c file CSS hi\u1ec7n c\u00f3 c\u1ee7a b\u1ea1n nh\u1ecf h\u01a1n th\u00f4ng qua c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn, nh\u01b0ng th\u1eddi gian \u0111\u00e3 l\u00e0m t\u00f4i thay \u0111\u1ed5i \u00fd ngh\u0129 \u0111\u1ea5y. <\/p>\n\n\n\n<p>Gi\u1edd th\u00ec t\u00f4i \u0111\u00e3 bi\u1ebft <em>gi\u1ea3m thi\u1ec3u CSS th\u1ef1c s\u1ef1<\/em> c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u1ea7n bi\u1ebft r\u00f5 t\u1ea5t c\u1ea3 c\u00e1c file CSS b\u1ea1n s\u1eed d\u1ee5ng, n\u1ebfu b\u1ea1n kh\u00f4ng n\u1eafm r\u00f5 th\u00ec s\u1ebd m\u1ec7t \u0111\u1ea5y!<\/p>\n\n\n\n<p>V\u00ec t\u1ea5t c\u1ea3 <a href=\"https:\/\/kiencang.net\/loai-bo-css-chan-hien-thi\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c file CSS v\u1ec1 b\u1ea3n ch\u1ea5t \u0111\u1ec1u ch\u1eb7n hi\u1ec3n th\u1ecb<\/a> cho n\u00ean \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i thu nh\u1ecf v\u00e0 l\u00e0m g\u1ecdn nh\u1eb9 CSS nhi\u1ec1u nh\u1ea5t c\u00f3 th\u1ec3, nh\u1edd th\u1ebf m\u00e0 <a href=\"https:\/\/kiencang.net\/tang-toc-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">website c\u1ee7a b\u1ea1n t\u1ea3i nhanh h\u01a1n<\/a>.<\/p>\n\n\n\n<p>H\u00e3y ki\u1ec3m tra c\u00e1ch s\u1eed d\u1ee5ng CSS tr\u00ean trang c\u1ee7a b\u1ea1n qua c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch ph\u1ed5 bi\u1ebfn nh\u01b0 <a href=\"https:\/\/pagespeed.web.dev\/\" target=\"_blank\" rel=\"noreferrer noopener\">PageSpeed Insights<\/a>. <\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"giao-di\u1ec7n-wordpress-va-css\"><span class=\"ez-toc-section\" id=\"2_Giao_dien_WordPress_va_CSS\"><\/span>#2. Giao di\u1ec7n WordPress v\u00e0 CSS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Nguy\u00ean nh\u00e2n h\u00e0ng \u0111\u1ea7u khi\u1ebfn cho CSS tr\u1edf n\u00ean qu\u00e1 nhi\u1ec1u l\u00e0 khi b\u1ea1n mua m\u1ed9t giao di\u1ec7n WordPress \u0111\u1eb9p c\u1ee7a m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u m\u1edbi. N\u00f3 b\u00f3ng b\u1ea9y v\u00e0 \u0111\u00e1ng y\u00eau. Nh\u01b0ng nhi\u1ec1u v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 n\u1eb1m b\u00ean d\u01b0\u1edbi&#8230;<\/p>\n\n\n\n<p>Nhi\u1ec1u giao di\u1ec7n WordPress c\u00f3 c\u1ea3 ph\u1ea7n n\u1ed5i v\u00e0 ch\u00ecm. Trong k\u1ecbch b\u1ea3n n\u00e0y b\u1ea1n ch\u1ecdn \u0111\u01b0\u1ee3c ph\u1ea7n n\u1ed5i s\u00e1ng s\u1ee7a, v\u00e0 m\u1ecdi th\u1ee9 tr\u00f4ng c\u00f3 v\u1ebb tuy\u1ec7t v\u1eddi.<\/p>\n\n\n\n<p>Nh\u01b0ng \u0111\u1ee3i \u0111\u00e3&#8230;B\u1ea1n c\u00f3 bi\u1ebft r\u1eb1ng ngay c\u1ea3 khi b\u1ea1n \u0111\u00e3 ch\u1ecdn \u0111\u01b0\u1ee3c ph\u1ea7n n\u1ed5i (b\u1ec1 ngo\u00e0i) lung linh th\u00ec c\u00e1c \u0111o\u1ea1n m\u00e3 CSS cho ph\u1ea7n ch\u00ecm c\u00f3 th\u1ec3 v\u1eabn \u0111\u01b0\u1ee3c t\u1ea3i v\u1ec1? \u0110i\u1ec1u \u0111\u00f3 c\u00f3 kh\u1ea3 n\u0103ng l\u00e0 v\u00e0i tr\u0103m d\u00f2ng m\u00e3.<\/p>\n\n\n\n<p>Ch\u1eb9p ch\u1eb9p. Gi\u1edd h\u00e3y ngh\u0129 v\u1ec1 \u0111i\u1ec1u n\u00e0y&#8230;N\u1ebfu giao di\u1ec7n c\u1ee7a b\u1ea1n cung c\u1ea5p c\u1ea3 t\u00e1 m\u00e0u s\u1eafc, b\u1ea1n c\u00f3 c\u1ea7n t\u1ea3i CSS cho t\u1ea5t c\u1ea3 t\u00e1 m\u00e0u s\u1eafc \u0111\u00f3 kh\u00f4ng? Hi\u1ec7n t\u1ea1i ch\u00fang ta c\u00f3 th\u1ec3 c\u00f3 h\u00e0ng ng\u00e0n c\u00e1c ch\u1ec9 d\u1eabn CSS kh\u00f4ng h\u1eefu d\u1ee5ng. Ch\u1eb9p m\u1ed9t l\u1ea7n n\u1eefa.<\/p>\n\n\n\n<p>\u0110i\u1ec1u ph\u1ed5 bi\u1ebfn l\u00e0 <a href=\"https:\/\/kiencang.net\/css-khong-su-dung-wordpress\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00e1c giao di\u1ec7n WordPress t\u1ea3i h\u00e0ng ng\u00e0n ch\u1ec9 d\u1eabn CSS m\u00e0 ch\u00fang kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng<\/a>. B\u1ea1n c\u00f3 th\u1ec3 ch\u1ec9 \u0111ang ch\u1ecdn l\u1ef1a m\u00e0u &#8220;h\u1ed3ng&#8221; cho trang nh\u01b0ng ch\u1ec9 d\u1eabn CSS cho m\u00e0u xanh, \u0111\u1ecf, tr\u1eafng, \u0111en, t\u00edm, v\u00e2n v\u00e2n v\u1eabn t\u1ed3n t\u1ea1i \u1edf \u0111\u00f3 m\u00e0 ch\u1eb3ng d\u00f9ng v\u00e0o vi\u1ec7c g\u00ec!<\/p>\n\n\n\n<p>L\u1eddi khuy\u00ean \u0111\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c theme WordPress t\u1ed1t l\u00e0:<\/p>\n\n\n\n<ul><li>Ch\u1ecdn t\u1eeb nh\u00e0 cung c\u1ea5p uy t\u00edn;<\/li><li>C\u00f3 nhi\u1ec1u ng\u01b0\u1eddi s\u1eed d\u1ee5ng;<\/li><li>\u0110\u01b0\u1ee3c review t\u1ed1t;<\/li><li>Ch\u1ecdn giao di\u1ec7n chuy\u00ean cho t\u1ed1c \u0111\u1ed9 n\u1ebfu b\u1ea1n mu\u1ed1n (v\u00ed d\u1ee5 <a href=\"https:\/\/kiencang.net\/generatepress-theme-tot-nhat\/\" target=\"_blank\" rel=\"noreferrer noopener\">theme GeneratePress<\/a>).<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"minify-co-nghia-la-lam-cho-no-nh\u1ecf-h\u01a1n\"><span class=\"ez-toc-section\" id=\"3_Minify_co_nghia_la_lam_cho_no_nho_hon\"><\/span>#3. Minify c\u00f3 ngh\u0129a l\u00e0 l\u00e0m cho n\u00f3 nh\u1ecf h\u01a1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>N\u1ebfu giao di\u1ec7n c\u1ee7a b\u1ea1n t\u1ea3i t\u1ea5t c\u1ea3 CSS \u0111\u00f3 nh\u01b0ng b\u1ea1n kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ebfn n\u00f3, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec1u \u0111o\u1ea1n m\u00e3 trong s\u1ed1 \u0111\u00f3 c\u00f3 th\u1ec3 x\u00f3a \u0111i. Hy v\u1ecdng c\u1ee7a t\u00f4i l\u00e0 c\u00e1c t\u00e1c gi\u1ea3 vi\u1ebft theme WordPress s\u1ebd hi\u1ec3u r\u00f5 \u0111i\u1ec1u n\u00e0y. <\/p>\n\n\n\n<p>Nh\u01b0ng n\u1ebfu b\u1ea1n \u0111\u00e3 mua m\u1ed9t giao di\u1ec7n t\u1eeb \u0111\u00e2u \u0111\u00f3 ho\u1eb7c ai \u0111\u00f3 tr\u00ean m\u1ea1ng, h\u00e3y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea7n ph\u1ea3i lo\u1ea1i b\u1ecf c\u00e1c CSS m\u00e0 b\u1ea1n kh\u00f4ng s\u1eed d\u1ee5ng \u0111\u1ebfn.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"no-khong-ch\u1ec9-la-wordpress-ma-thoi\"><span class=\"ez-toc-section\" id=\"4_No_khong_chi_la_WordPress_ma_thoi\"><\/span>#4. N\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0 WordPress m\u00e0 th\u00f4i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u01b0\u1edbc ch\u00ednh x\u00e1c \u0111\u1ea7u ti\u00ean \u0111\u1ec3 gi\u1ea3m thi\u1ec3u CSS l\u00e0 c\u1ea7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n kh\u00f4ng t\u1ea3i CSS m\u00e0 b\u1ea1n kh\u00f4ng s\u1eed d\u1ee5ng. Th\u00f4ng tin n\u00e0y s\u1ebd th\u01b0\u1eddng ch\u1ec9 c\u00f3 \u0111\u01b0\u1ee3c t\u1eeb ch\u00ednh ng\u01b0\u1eddi vi\u1ebft giao di\u1ec7n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"lam-th\u1ebf-nao-d\u1ec3-gi\u1ea3m-thi\u1ec3u-cac-ma-css-da-t\u1ed3n-t\u1ea1i\"><span class=\"ez-toc-section\" id=\"5_Lam_the_nao_de_giam_thieu_cac_ma_CSS_da_ton_tai\"><\/span>#5. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 gi\u1ea3m thi\u1ec3u c\u00e1c m\u00e3 CSS \u0111\u00e3 t\u1ed3n t\u1ea1i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ngay c\u1ea3 khi b\u1ea1n kh\u00f4ng th\u1ec3 t\u00ecm ra t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 d\u1eabn CSS kh\u00f4ng h\u1eefu d\u1ee5ng trong \u0111o\u1ea1n m\u00e3 c\u1ee7a m\u00ecnh, b\u1ea1n v\u1eabn c\u1ea7n s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 gi\u1ea3m thi\u1ec3u CSS \u0111\u1ec3 \u00edt nh\u1ea5t lo\u1ea1i b\u1ecf ph\u1ea7n n\u00e0o \u0111\u00f3 nh\u1eefng ph\u1ea7n d\u01b0 th\u1eeba kh\u00f4ng c\u1ea7n thi\u1ebft. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 hai c\u00f4ng c\u1ee5 t\u00f4i t\u1eebng s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul><li><a href=\"http:\/\/refresh-sf.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Refresh-SF<\/a>;<\/li><li><a href=\"http:\/\/csscompressor.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">CSS Compressor<\/a>.<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"vi-d\u1ee5-v\u1ec1-gi\u1ea3m-thi\u1ec3u-css\"><span class=\"ez-toc-section\" id=\"6_Vi_du_ve_giam_thieu_CSS\"><\/span>#6. V\u00ed d\u1ee5 v\u1ec1 gi\u1ea3m thi\u1ec3u CSS<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>B\u00ean d\u01b0\u1edbi l\u00e0 m\u1ed9t s\u1ed1 ch\u1ec9 d\u1eabn CSS \u0111\u01b0\u1ee3c \u0111\u1ecbnh d\u1ea1ng v\u1edbi r\u1ea5t nhi\u1ec1u kho\u1ea3ng tr\u1ed1ng (d\u00f9 \u0111i\u1ec1u n\u00e0y t\u1ed1t cho vi\u1ec7c vi\u1ebft m\u00e3, \u0111\u1ecdc m\u00e3, nh\u01b0ng n\u00f3 kh\u00f4ng t\u1ed1i \u01b0u v\u1ec1 dung l\u01b0\u1ee3ng file)&#8230;<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>body\n{\nbackground-color:#d0e4fe;\n}\nh1\n{\ncolor:orange;\ntext-align:center;\n}<\/code><\/pre>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 copy \u0111o\u1ea1n m\u00e3 tr\u00ean v\u00e0 paste n\u00f3 v\u00e0o m\u1ed9t c\u00f4ng c\u1ee5 tr\u1ef1c tuy\u1ebfn v\u00e0 s\u1ebd th\u1ea5y m\u00e3 k\u1ebft qu\u1ea3 tr\u00f4ng gi\u1ed1ng nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>body {background-color:#d0e4fe;}\nh1 {color:orange;text-align:center;}<\/code><\/pre>\n\n\n\n<p>Gi\u1ea3m thi\u1ec3u CSS l\u00e0 l\u00e0m nh\u1ecf k\u00edch c\u1ee1 file, v\u00e0 c\u0169ng c\u00f3 th\u1ec3 c\u00f3 c\u00e1c c\u1ea3i ti\u1ebfn kh\u00e1c \u0111\u01b0\u1ee3c th\u00eam v\u00e0o, \u0111\u1eb7c bi\u1ec7t l\u00e0 khi s\u1eed d\u1ee5ng c\u00e1c file CSS dung l\u01b0\u1ee3ng l\u1edbn. Do CSS c\u1ee7a b\u1ea1n c\u00f3 k\u00edch c\u1ee1 nh\u1ecf h\u01a1n v\u00e0 t\u1ed1i \u01b0u t\u1ed1t h\u01a1n, trang c\u1ee7a b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c t\u1ea3i nhanh h\u01a1n.<\/p>\n\n\n\n<p>Kh\u00f4ng th\u00e0nh v\u1ea5n \u0111\u1ec1 l\u00e0 b\u1ea1n s\u1eed d\u1ee5ng CSS nh\u01b0 th\u1ebf n\u00e0o (d\u00f9 l\u00e0 <a href=\"https:\/\/kiencang.net\/noi-tuyen-cac-css-nho\/\" target=\"_blank\" rel=\"noreferrer noopener\">inline\/n\u1ed9i tuy\u1ebfn<\/a>, file ngo\u00e0i, hay k\u1ebft h\u1ee3p c\u00e1c file ngo\u00e0i), k\u00edch c\u1ee1 CSS nh\u1ecf h\u01a1n lu\u00f4n t\u1ed1t h\u01a1n v\u00e0 s\u1ebd gi\u00fap trang web c\u1ee7a b\u1ea1n t\u1ea3i nhanh h\u01a1n.<\/p>\n\n\n\n<p class=\"has-luminous-vivid-amber-background-color has-background\">PS: t\u00ednh n\u0103ng gi\u1ea3m thi\u1ec3u CSS c\u00f3 m\u1eb7t \u1edf t\u1ea5t c\u1ea3 c\u00e1c <a href=\"https:\/\/kiencang.net\/category\/cache\/\" target=\"_blank\" rel=\"noreferrer noopener\">plugin cache<\/a> th\u01b0\u01a1ng m\u1ea1i (v\u00ed d\u1ee5 <a href=\"https:\/\/kiencang.net\/hd-plugin-litespeed-cache-p1\/\" target=\"_blank\" rel=\"noreferrer noopener\">LiteSpeed cache<\/a>, WP-Rocket, <a href=\"https:\/\/kiencang.net\/cach-dung-plugin-swift-performance\/\" target=\"_blank\" rel=\"noreferrer noopener\">Swift Performance<\/a>). Vi\u1ec7c s\u1eed d\u1ee5ng t\u00ednh n\u0103ng n\u00e0y kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng c\u00f3 \u00edch, \u0111\u1eb7c bi\u1ec7t l\u00e0 tr\u00ean c\u00e1c giao di\u1ec7n, plugin \u0111\u00e3 \u0111\u01b0\u1ee3c vi\u1ebft m\u00e3 t\u1ed1t- v\u00ec l\u00fac n\u00e0y c\u00e1c t\u1ed1i \u01b0u th\u00eam s\u1ebd h\u1ea7u nh\u01b0 kh\u00f4ng c\u00f3 \u00edch g\u00ec nh\u01b0ng l\u1ea1i l\u00e0m t\u0103ng th\u1eddi gian x\u1eed l\u00fd \u0111\u1ec3 c\u00f3 th\u1ec3 t\u1ea1o ra cache &amp; preload cache (t\u1ea1o tr\u01b0\u1edbc cache). Xem th\u00eam: <a href=\"https:\/\/kiencang.net\/bo-gop-minify-css\/\" target=\"_blank\" rel=\"noreferrer noopener\">b\u1ea1n c\u00f3 th\u1ec3 b\u1ecf g\u1ed9p, minify CSS n\u1ebfu mu\u1ed1n<\/a>.<\/p>\n\n\n\n<p><em>(D\u1ecbch t\u1eeb b\u00e0i vi\u1ebft Minify CSS &#8211; T\u00e1c gi\u1ea3: Patrick Sexton)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: n\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c theme \u0111\u01b0\u1ee3c vi\u1ebft t\u1ed1t th\u00ec minify CSS \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft ngay t\u1eeb b\u01b0\u1edbc \u0111\u1ea7u. Ngo\u00e0i ra c\u00e1c plugin cache c\u0169ng h\u1ed7 tr\u1ee3 t\u1ed1t vi\u1ec7c n\u00e0y. Th\u00eam v\u00e0o \u0111\u00f3 n\u1eefa c\u00e1c gi\u1ea3i ph\u00e1p n\u00e9n m\u1eb7c \u0111\u1ecbnh (c\u00f3 \u1edf h\u1ea7u h\u1ebft c\u00e1c hosting) c\u0169ng l\u00e0m &hellip;<\/p>\n","protected":false},"author":1,"featured_media":13072,"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>Minify CSS hay gi\u1ea3m thi\u1ec3u k\u00edch c\u1ee1 CSS c\u00f3 t\u00e1c d\u1ee5ng g\u00ec? &#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\/giam-thieu-css\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Minify CSS hay gi\u1ea3m thi\u1ec3u k\u00edch c\u1ee1 CSS c\u00f3 t\u00e1c d\u1ee5ng g\u00ec? &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: n\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c theme \u0111\u01b0\u1ee3c vi\u1ebft t\u1ed1t th\u00ec minify CSS \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft ngay t\u1eeb b\u01b0\u1edbc \u0111\u1ea7u. Ngo\u00e0i ra c\u00e1c plugin cache c\u0169ng h\u1ed7 tr\u1ee3 t\u1ed1t vi\u1ec7c n\u00e0y. Th\u00eam v\u00e0o \u0111\u00f3 n\u1eefa c\u00e1c gi\u1ea3i ph\u00e1p n\u00e9n m\u1eb7c \u0111\u1ecbnh (c\u00f3 \u1edf h\u1ea7u h\u1ebft c\u00e1c hosting) c\u0169ng l\u00e0m &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/giam-thieu-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=\"2021-02-08T01:33:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-08-06T00:51:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/kiencang.net\/wp-content\/uploads\/2019\/02\/giam-thieu-CSS.png\" \/>\n\t<meta property=\"og:image:width\" content=\"849\" \/>\n\t<meta property=\"og:image:height\" content=\"445\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\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=\"5 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Minify CSS hay gi\u1ea3m thi\u1ec3u k\u00edch c\u1ee1 CSS c\u00f3 t\u00e1c d\u1ee5ng g\u00ec? &#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\/giam-thieu-css\/","og_locale":"vi_VN","og_type":"article","og_title":"Minify CSS hay gi\u1ea3m thi\u1ec3u k\u00edch c\u1ee1 CSS c\u00f3 t\u00e1c d\u1ee5ng g\u00ec? &#8226; Ki\u1ebfn c\u00e0ng","og_description":"V\u00e0i l\u1eddi c\u1ee7a ng\u01b0\u1eddi d\u1ecbch: n\u1ebfu b\u1ea1n \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c theme \u0111\u01b0\u1ee3c vi\u1ebft t\u1ed1t th\u00ec minify CSS \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft ngay t\u1eeb b\u01b0\u1edbc \u0111\u1ea7u. Ngo\u00e0i ra c\u00e1c plugin cache c\u0169ng h\u1ed7 tr\u1ee3 t\u1ed1t vi\u1ec7c n\u00e0y. 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Email li\u00ean h\u1ec7: guiemailchotoi@gmail.com","sameAs":["https:\/\/www.facebook.com\/anhducnguyen87\/"],"url":"https:\/\/kiencang.net\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/11609"}],"collection":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/comments?post=11609"}],"version-history":[{"count":0,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/posts\/11609\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/media\/13072"}],"wp:attachment":[{"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/media?parent=11609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/categories?post=11609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kiencang.net\/wp-json\/wp\/v2\/tags?post=11609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}