{"id":8251,"date":"2023-10-07T13:33:04","date_gmt":"2023-10-07T06:33:04","guid":{"rendered":"https:\/\/teky.edu.vn\/blog\/?p=8251"},"modified":"2025-08-06T14:01:34","modified_gmt":"2025-08-06T07:01:34","slug":"css-la-gi","status":"publish","type":"post","link":"https:\/\/teky.edu.vn\/blog\/css-la-gi\/","title":{"rendered":"CSS l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn chi ti\u1ebft v\u1ec1 CSS cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u"},"content":{"rendered":"\n\n
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\n 5\/5 - (6 b\u00ecnh ch\u1ecdn) <\/div>\n <\/div>\n

CSS l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng gi\u00fap t\u1ea1o n\u00ean di\u1ec7n m\u1ea1o cho c\u00e1c trang web, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u1eadp tr\u00ecnh web hi\u1ec7n nay. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai c\u0169ng hi\u1ec3u r\u00f5 v\u1ec1 ng\u00f4n ng\u1eef n\u00e0y v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3. B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi CSS c\u00f3 vai tr\u00f2 g\u00ec v\u00e0 l\u00e0m sao \u0111\u1ec3 \u00e1p d\u1ee5ng n\u00f3 hi\u1ec7u qu\u1ea3 trong c\u00e1c d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh? N\u1ebfu b\u1ea1n mu\u1ed1n t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 CSS, c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong thi\u1ebft k\u1ebf web v\u00e0 c\u00e1ch b\u1eaft \u0111\u1ea7u v\u1edbi ng\u00f4n ng\u1eef n\u00e0y, b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd gi\u00fap b\u1ea1n c\u00f3 c\u00e1i nh\u00ecn \u0111\u1ea7y \u0111\u1ee7 v\u00e0 d\u1ec5 hi\u1ec3u nh\u1ea5t.<\/p>\n

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N\u1ed9i dung <\/p>\nToggle<\/span><\/path><\/svg><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n

  • \u0110\u1ecbnh ngh\u0129a CSS l\u00e0 g\u00ec?<\/a><\/li>
  • B\u1ed1 c\u1ee5c c\u1ee7a m\u1ed9t \u0111o\u1ea1n CSS l\u00e0 g\u00ec?<\/a><\/li>
  • C\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t \u0111o\u1ea1n CSS g\u1ed3m nh\u1eefng g\u00ec?<\/a>
    • B\u1ed9 ch\u1ecdn<\/a><\/li>
    • Khai b\u00e1o<\/a><\/li>
    • Thu\u1ed9c t\u00ednh<\/a><\/li>
    • Gi\u00e1 tr\u1ecb c\u1ee7a thu\u1ed9c t\u00ednh<\/a><\/li><\/ul><\/li>
    • Nh\u1eefng l\u00fd do n\u00ean s\u1eed d\u1ee5ng CSS l\u00e0 g\u00ec?<\/a>
      • Cung c\u1ea5p r\u1ea5t nhi\u1ec1u thu\u1ed9c t\u00ednh kh\u00e1c nhau<\/a><\/li>
      • Th\u1eddi gian s\u1eed d\u1ee5ng s\u1ebd \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn l\u1ea1i<\/a><\/li>
      • Gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c nhi\u1ec1u v\u1ea5n \u0111\u1ec1 kh\u00e1c nhau<\/a><\/li><\/ul><\/li>
      • Gi\u1edbi thi\u1ec7u v\u1ec1 m\u1ed9t s\u1ed1 phi\u00ean b\u1ea3n CSS<\/a><\/li>
      • Gi\u1edbi thi\u1ec7u c\u00e1ch nh\u00fang CSS \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi quan t\u00e2m<\/a><\/li>
      • H\u1ecdc l\u1eadp tr\u00ecnh, c\u00f4ng ngh\u1ec7 t\u1ea1i Teky – th\u00f4ng tin c\u1ea7n bi\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n

        <\/span>\u0110\u1ecbnh ngh\u0129a CSS l\u00e0 g\u00ec?<\/b><\/span><\/h2>\n

        CSS (Cascading Style Sheets) l\u00e0 m\u1ed9t ng\u00f4n ng\u1eef d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh d\u1ea1ng v\u00e0 trang tr\u00ed c\u00e1c ph\u1ea7n t\u1eed \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong HTML. C\u1ee5 th\u1ec3, CSS cho ph\u00e9p l\u1eadp tr\u00ecnh vi\u00ean t\u00e1ch bi\u1ec7t vi\u1ec7c c\u1ea5u tr\u00fac n\u1ed9i dung v\u00e0 tr\u00ecnh b\u00e0y giao di\u1ec7n tr\u00ean trang web, gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng m\u00e3 v\u00e0 d\u1ec5 d\u00e0ng thay \u0111\u1ed5i giao di\u1ec7n m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea5u tr\u00fac d\u1eef li\u1ec7u.<\/p>\n

        Trong khi HTML (HyperText Markup Language) \u0111\u1ea3m nh\u1eadn vai tr\u00f2 x\u00e2y d\u1ef1ng c\u1ea5u tr\u00fac v\u00e0 n\u1ed9i dung c\u1ee7a trang web (nh\u01b0 c\u00e1c b\u1ea3ng, ti\u00eau \u0111\u1ec1, \u0111o\u1ea1n v\u0103n b\u1ea3n), CSS gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c y\u1ebfu t\u1ed1 v\u1ec1 m\u1eb7t giao di\u1ec7n nh\u01b0 ki\u1ec3u ch\u1eef, m\u00e0u s\u1eafc, b\u1ed1 c\u1ee5c v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 trang tr\u00ed kh\u00e1c. Vi\u1ec7c s\u1eed d\u1ee5ng CSS cho ph\u00e9p t\u1ea1o ra nhi\u1ec1u phong c\u00e1ch kh\u00e1c nhau cho c\u00f9ng m\u1ed9t HTML, gi\u00fap vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 b\u1ea3o tr\u00ec trang web tr\u1edf n\u00ean linh ho\u1ea1t v\u00e0 d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n

        \"H\u1ecdc<\/a>
        H\u1ecdc th\u1eed l\u1eadp tr\u00ecnh online mi\u1ec5n ph\u00ed t\u1ea1i Teky Edtech – Kh\u00e1m ph\u00e1 ti\u1ec1m n\u0103ng c\u00f4ng ngh\u1ec7 c\u1ee7a tr\u1ebb \u0111\u1ec3 d\u1eabn \u0111\u1ea7u t\u01b0\u01a1ng lai<\/figcaption><\/figure>\n

        CSS ra \u0111\u1eddi nh\u1eb1m kh\u1eafc ph\u1ee5c nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a HTML trong vi\u1ec7c \u0111\u1ecbnh d\u1ea1ng v\u00e0 tr\u00ecnh b\u00e0y giao di\u1ec7n web. Trong khi HTML ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o vi\u1ec7c c\u1ea5u tr\u00fac n\u1ed9i dung c\u1ee7a trang web th\u00f4ng qua c\u00e1c th\u1ebb (tags), n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ki\u1ec3m so\u00e1t c\u00e1ch th\u1ee9c hi\u1ec3n th\u1ecb v\u00e0 b\u1ed1 tr\u00ed c\u00e1c ph\u1ea7n t\u1eed tr\u00ean trang. Do \u0111\u00f3, CSS \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1ec3 t\u00e1ch bi\u1ec7t vi\u1ec7c c\u1ea5u tr\u00fac n\u1ed9i dung (HTML) v\u00e0 vi\u1ec7c tr\u00ecnh b\u00e0y giao di\u1ec7n (CSS), t\u1eeb \u0111\u00f3 mang l\u1ea1i s\u1ef1 linh ho\u1ea1t v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n trong vi\u1ec7c thi\u1ebft k\u1ebf web.<\/p>\n

        Xem th\u00eam: Position trong CSS c\u00f3 thu\u1ed9c t\u00ednh g\u00ec? 4 t\u00e0i li\u1ec7u v\u1ec1 CSS Position hay nh\u1ea5t<\/a><\/em><\/p>\n