{"id":232,"date":"2026-03-26T21:01:15","date_gmt":"2026-03-26T21:01:15","guid":{"rendered":"https:\/\/www.hi-posts.com\/vn\/accessibility-standards-product-designers\/"},"modified":"2026-03-26T21:01:15","modified_gmt":"2026-03-26T21:01:15","slug":"accessibility-standards-product-designers","status":"publish","type":"post","link":"https:\/\/www.hi-posts.com\/vn\/accessibility-standards-product-designers\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn Thi\u1ebft k\u1ebf UX: C\u00e1c Ti\u00eau chu\u1ea9n Truy c\u1eadp m\u00e0 M\u1ecdi Nh\u00e0 Thi\u1ebft k\u1ebf S\u1ea3n ph\u1ea9m Ph\u1ea3i Bi\u1ebft"},"content":{"rendered":"<p>T\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m k\u1ef9 thu\u1eadt s\u1ed1 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t cho m\u1ecdi ng\u01b0\u1eddi l\u00e0 m\u1ed9t tr\u00e1ch nhi\u1ec7m c\u1ed1t l\u00f5i c\u1ee7a thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m hi\u1ec7n \u0111\u1ea1i. Truy c\u1eadp kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t m\u1ee5c ki\u1ec3m tra \u0111\u1ec3 g\u1ea1ch b\u1ecf v\u00e0o cu\u1ed1i d\u1ef1 \u00e1n; \u0111\u00f3 l\u00e0 m\u1ed9t nguy\u00ean t\u1eafc thi\u1ebft k\u1ebf c\u01a1 b\u1ea3n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u1ecdi quy\u1ebft \u0111\u1ecbnh t\u1eeb b\u1ea3n ph\u00e1c th\u1ea3o \u0111\u1ea7u ti\u00ean. Khi c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf t\u00edch h\u1ee3p c\u00e1c ti\u00eau chu\u1ea9n truy c\u1eadp ngay t\u1eeb \u0111\u1ea7u, h\u1ecd x\u00e2y d\u1ef1ng c\u00e1c giao di\u1ec7n d\u1ec5 s\u1eed d\u1ee5ng, bao g\u1ed3m v\u00e0 b\u1ec1n v\u1eefng.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 c\u00e1c ti\u00eau chu\u1ea9n thi\u1ebft y\u1ebfu b\u1ea1n c\u1ea7n bi\u1ebft. N\u00f3 bao g\u1ed3m c\u00e1c H\u01b0\u1edbng d\u1eabn Truy c\u1eadp N\u1ed9i dung Web (WCAG), c\u00e1c y\u00eau c\u1ea7u thi\u1ebft k\u1ebf tr\u1ef1c quan, c\u00e1c m\u1eabu t\u01b0\u01a1ng t\u00e1c v\u00e0 chi\u1ebfn l\u01b0\u1ee3c n\u1ed9i dung. B\u1eb1ng c\u00e1ch tu\u00e2n th\u1ee7 c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y, b\u1ea1n \u0111\u1ea3m b\u1ea3o thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh h\u1ed7 tr\u1ee3 ng\u01b0\u1eddi d\u00f9ng v\u1edbi nhi\u1ec1u kh\u1ea3 n\u0103ng kh\u00e1c nhau, bao g\u1ed3m c\u1ea3 nh\u1eefng ng\u01b0\u1eddi khi\u1ebfm th\u1ecb, khi\u1ebfm th\u00ednh, c\u00f3 khi\u1ebfm khuy\u1ebft v\u1eadn \u0111\u1ed9ng ho\u1eb7c c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 nh\u1eadn th\u1ee9c.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Chibi-style infographic illustrating essential WCAG accessibility standards for product designers in 16:9 format, featuring the four POUR principles (Perceivable, Operable, Understandable, Robust), WCAG conformance levels A\/AA\/AAA pyramid, visual design requirements including 4.5:1 color contrast ratio and 16px minimum font size, interaction guidelines like keyboard navigation and 44x44px touch targets, common design pitfalls with accessible solutions, and testing best practices, all conveyed through cute chibi characters, high-contrast colors, and clear visual hierarchy to promote inclusive digital product design\" decoding=\"async\" src=\"https:\/\/www.hi-posts.com\/wp-content\/uploads\/2026\/03\/accessibility-standards-product-designers-infographic-chibi.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83c\udf10 Hi\u1ec3u r\u00f5 Khung WCAG<\/h2>\n<p>C\u00e1c H\u01b0\u1edbng d\u1eabn Truy c\u1eadp N\u1ed9i dung Web (WCAG) l\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp web. \u0110\u01b0\u1ee3c qu\u1ea3n l\u00fd b\u1edfi Li\u00ean minh Th\u1ebf gi\u1edbi Web (W3C), c\u00e1c h\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p khung \u0111\u1ec3 l\u00e0m cho n\u1ed9i dung web d\u1ec5 truy c\u1eadp h\u01a1n \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi khuy\u1ebft t\u1eadt. M\u1eb7c d\u00f9 ban \u0111\u1ea7u t\u1eadp trung v\u00e0o web, c\u00e1c nguy\u00ean t\u1eafc n\u00e0y \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i cho ph\u1ea7n m\u1ec1m, \u1ee9ng d\u1ee5ng v\u00e0 s\u1ea3n ph\u1ea9m k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n<p>C\u00e1c h\u01b0\u1edbng d\u1eabn \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ba c\u1ea5p \u0111\u1ed9 tu\u00e2n th\u1ee7:<\/p>\n<ul>\n<li><strong>C\u1ea5p \u0111\u1ed9 A:<\/strong> M\u1ee9c \u0111\u1ed9 t\u1ed1i thi\u1ec3u v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp. N\u1ebfu m\u1ed9t trang web kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c n\u00e0y, th\u00ec ho\u00e0n to\u00e0n kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/li>\n<li><strong>C\u1ea5p \u0111\u1ed9 AA:<\/strong> M\u1ee9c \u0111\u1ed9 trung b\u00ecnh. \u0110\u00e2y l\u00e0 m\u1ee5c ti\u00eau cho ph\u1ea7n l\u1edbn tu\u00e2n th\u1ee7 ph\u00e1p l\u00fd v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh.<\/li>\n<li><strong>C\u1ea5p \u0111\u1ed9 AAA:<\/strong> M\u1ee9c \u0111\u1ed9 cao nh\u1ea5t v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp. M\u1eb7c d\u00f9 l\u00fd t\u01b0\u1edfng, nh\u01b0ng th\u01b0\u1eddng kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c cho t\u1ea5t c\u1ea3 n\u1ed9i dung.<\/li>\n<\/ul>\n<p>H\u1ea7u h\u1ebft c\u00e1c t\u1ed5 ch\u1ee9c h\u01b0\u1edbng \u0111\u1ebfn<strong>WCAG 2.1 c\u1ea5p \u0111\u1ed9 AA<\/strong> tu\u00e2n th\u1ee7. S\u1ef1 c\u00e2n b\u1eb1ng n\u00e0y \u0111\u1ea3m b\u1ea3o ti\u00eau chu\u1ea9n cao v\u1ec1 kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng m\u00e0 kh\u00f4ng l\u00e0m cho vi\u1ec7c ph\u00e1t tri\u1ec3n tr\u1edf n\u00ean kh\u00f4ng kh\u1ea3 thi. C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf n\u00ean l\u00e0m quen v\u1edbi c\u00e1c ti\u00eau ch\u00ed th\u00e0nh c\u00f4ng c\u1ee5 th\u1ec3 n\u1eb1m trong c\u1ea5p \u0111\u1ed9 n\u00e0y.<\/p>\n<h2>\ud83c\udfd7\ufe0f B\u1ed1n Nguy\u00ean t\u1eafc Truy c\u1eadp (POUR)<\/h2>\n<p>WCAG \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean b\u1ed1n nguy\u00ean t\u1eafc c\u1ed1t l\u00f5i. M\u1ecdi quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf \u0111\u1ec1u c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean b\u1ed1n tr\u1ee5 c\u1ed9t n\u00e0y. N\u1ebfu m\u1ed9t thi\u1ebft k\u1ebf kh\u00f4ng \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1ea5t k\u1ef3 nguy\u00ean t\u1eafc n\u00e0o trong s\u1ed1 n\u00e0y, th\u00ec n\u00f3 kh\u00f4ng th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<h3>1. C\u00f3 th\u1ec3 nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c<\/h3>\n<p>Th\u00f4ng tin v\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y theo c\u00e1ch m\u00e0 ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c. Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 th\u1ec3 nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c th\u00f4ng tin \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y, b\u1ea5t k\u1ec3 kh\u1ea3 n\u0103ng c\u1ea3m gi\u00e1c c\u1ee7a h\u1ecd.<\/p>\n<ul>\n<li><strong>Thay th\u1ebf v\u0103n b\u1ea3n:<\/strong> Cung c\u1ea5p c\u00e1c thay th\u1ebf v\u0103n b\u1ea3n cho n\u1ed9i dung kh\u00f4ng ph\u1ea3i v\u0103n b\u1ea3n. V\u00ed d\u1ee5: h\u00ecnh \u1ea3nh ph\u1ea3i c\u00f3 v\u0103n b\u1ea3n thay th\u1ebf m\u00f4 t\u1ea3.<\/li>\n<li><strong>Ph\u01b0\u01a1ng ti\u1ec7n d\u1ef1a theo th\u1eddi gian:<\/strong> Cung c\u1ea5p c\u00e1c thay th\u1ebf cho ph\u01b0\u01a1ng ti\u1ec7n d\u1ef1a theo th\u1eddi gian, ch\u1eb3ng h\u1ea1n nh\u01b0 ph\u1ee5 \u0111\u1ec1 cho video.<\/li>\n<li><strong>C\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh:<\/strong> T\u1ea1o n\u1ed9i dung c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t th\u00f4ng tin.<\/li>\n<li><strong>D\u1ec5 ph\u00e2n bi\u1ec7t:<\/strong> Gi\u00fap ng\u01b0\u1eddi d\u00f9ng d\u1ec5 nh\u00ecn v\u00e0 nghe n\u1ed9i dung h\u01a1n.<\/li>\n<\/ul>\n<h3>2. C\u00f3 th\u1ec3 thao t\u00e1c \u0111\u01b0\u1ee3c<\/h3>\n<p>C\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng v\u00e0 thao t\u00e1c \u0111i\u1ec1u h\u01b0\u1edbng ph\u1ea3i c\u00f3 th\u1ec3 thao t\u00e1c \u0111\u01b0\u1ee3c. T\u1ea5t c\u1ea3 ch\u1ee9c n\u0103ng ph\u1ea3i c\u00f3 s\u1eb5n t\u1eeb b\u00e0n ph\u00edm, v\u00e0 ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 \u0111\u1ee7 th\u1eddi gian \u0111\u1ec3 \u0111\u1ecdc v\u00e0 s\u1eed d\u1ee5ng n\u1ed9i dung.<\/p>\n<ul>\n<li><strong>C\u00f3 th\u1ec3 truy c\u1eadp b\u1eb1ng b\u00e0n ph\u00edm:<\/strong> T\u1ea5t c\u1ea3 c\u00e1c ch\u1ee9c n\u0103ng ph\u1ea3i c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng giao di\u1ec7n b\u00e0n ph\u00edm.<\/li>\n<li><strong>Th\u1eddi gian \u0111\u1ee7:<\/strong>Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i \u0111\u01b0\u1ee3c cung c\u1ea5p \u0111\u1ee7 th\u1eddi gian \u0111\u1ec3 \u0111\u1ecdc v\u00e0 s\u1eed d\u1ee5ng n\u1ed9i dung.<\/li>\n<li><strong>Co gi\u1eadt v\u00e0 ph\u1ea3n \u1ee9ng th\u1ec3 ch\u1ea5t:<\/strong>Kh\u00f4ng thi\u1ebft k\u1ebf n\u1ed9i dung g\u00e2y co gi\u1eadt.<\/li>\n<li><strong>C\u00f3 th\u1ec3 \u0111i\u1ec1u h\u01b0\u1edbng:<\/strong>Cung c\u1ea5p c\u00e1c ph\u01b0\u01a1ng th\u1ee9c gi\u00fap ng\u01b0\u1eddi d\u00f9ng \u0111i\u1ec1u h\u01b0\u1edbng, t\u00ecm n\u1ed9i dung v\u00e0 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed hi\u1ec7n t\u1ea1i c\u1ee7a h\u1ecd.<\/li>\n<\/ul>\n<h3>3. D\u1ec5 hi\u1ec3u<\/h3>\n<p>Th\u00f4ng tin v\u00e0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i d\u1ec5 hi\u1ec3u. Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c th\u00f4ng tin c\u0169ng nh\u01b0 c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<ul>\n<li><strong>D\u1ec5 \u0111\u1ecdc:<\/strong>L\u00e0m cho n\u1ed9i dung v\u0103n b\u1ea3n d\u1ec5 \u0111\u1ecdc v\u00e0 d\u1ec5 hi\u1ec3u.<\/li>\n<li><strong>D\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c:<\/strong>L\u00e0m cho trang web xu\u1ea5t hi\u1ec7n v\u00e0 ho\u1ea1t \u0111\u1ed9ng theo c\u00e1ch c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c.<\/li>\n<li><strong>H\u1ed7 tr\u1ee3 nh\u1eadp li\u1ec7u:<\/strong>Gi\u00fap ng\u01b0\u1eddi d\u00f9ng tr\u00e1nh v\u00e0 s\u1eeda l\u1ed7i.<\/li>\n<\/ul>\n<h3>4. B\u1ec1n v\u1eefng<\/h3>\n<p>N\u1ed9i dung ph\u1ea3i \u0111\u1ee7 b\u1ec1n v\u1eefng \u0111\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady b\u1edfi nhi\u1ec1u lo\u1ea1i c\u00f4ng c\u1ee5 truy c\u1eadp ng\u01b0\u1eddi d\u00f9ng, bao g\u1ed3m c\u1ea3 c\u00f4ng ngh\u1ec7 h\u1ed7 tr\u1ee3.<\/p>\n<ul>\n<li><strong>T\u01b0\u01a1ng th\u00edch:<\/strong>T\u1ed1i \u0111a h\u00f3a t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 ng\u01b0\u1eddi d\u00f9ng hi\u1ec7n t\u1ea1i v\u00e0 t\u01b0\u01a1ng lai.<\/li>\n<li><strong>M\u00e3 h\u1ee3p l\u1ec7:<\/strong>\u0110\u1ea3m b\u1ea3o m\u00e3 h\u1ee3p l\u1ec7 \u0111\u1ec3 ph\u1ea7n m\u1ec1m \u0111\u1ecdc m\u00e0n h\u00ecnh v\u00e0 tr\u00ecnh duy\u1ec7t c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u00fang.<\/li>\n<\/ul>\n<h2>\ud83c\udfa8 Ti\u00eau chu\u1ea9n thi\u1ebft k\u1ebf tr\u1ef1c quan<\/h2>\n<p>Thi\u1ebft k\u1ebf tr\u1ef1c quan \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong kh\u1ea3 n\u0103ng truy c\u1eadp. \u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n cao, ki\u1ec3u ch\u1eef r\u00f5 r\u00e0ng v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng m\u00e0u s\u1eafc c\u1ea9n tr\u1ecdng \u0111\u1ea3m b\u1ea3o n\u1ed9i dung c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c cho m\u1ecdi ng\u01b0\u1eddi, k\u1ec3 c\u1ea3 nh\u1eefng ng\u01b0\u1eddi c\u00f3 th\u1ecb l\u1ef1c k\u00e9m ho\u1eb7c khi\u1ebfm khuy\u1ebft m\u00e0u s\u1eafc.<\/p>\n<h3>\u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n m\u00e0u s\u1eafc<\/h3>\n<p>\u0110\u1ed9 t\u01b0\u01a1ng ph\u1ea3n l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u1ed9 s\u00e1ng ho\u1eb7c m\u00e0u s\u1eafc gi\u00fap ph\u00e2n bi\u1ec7t m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng. V\u0103n b\u1ea3n c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n th\u1ea5p r\u1ea5t kh\u00f3 \u0111\u1ecdc \u0111\u1ed1i v\u1edbi nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng ng\u01b0\u1eddi c\u00f3 khi\u1ebfm khuy\u1ebft th\u1ecb gi\u00e1c.<\/p>\n<ul>\n<li><strong>V\u0103n b\u1ea3n th\u00f4ng th\u01b0\u1eddng:<\/strong>V\u0103n b\u1ea3n ti\u00eau chu\u1ea9n ph\u1ea3i c\u00f3 t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n \u00edt nh\u1ea5t l\u00e0<strong>4.5:1<\/strong>so v\u1edbi n\u1ec1n c\u1ee7a n\u00f3.<\/li>\n<li><strong>V\u0103n b\u1ea3n l\u1edbn:<\/strong> V\u0103n b\u1ea3n c\u00f3 k\u00edch th\u01b0\u1edbc 18pt ho\u1eb7c in \u0111\u1eadm 14pt ph\u1ea3i c\u00f3 t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n \u00edt nh\u1ea5t l\u00e0 <strong>3:1<\/strong>.<\/li>\n<li><strong>Th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng:<\/strong>Bi\u1ec3u t\u01b0\u1ee3ng v\u00e0 c\u00e1c ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n \u00edt nh\u1ea5t l\u00e0 <strong>3:1<\/strong> so v\u1edbi c\u00e1c m\u00e0u li\u1ec1n k\u1ec1.<\/li>\n<\/ul>\n<p>Kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o m\u00e0u s\u1eafc \u0111\u1ec3 truy\u1ec1n \u0111\u1ea1t th\u00f4ng tin. V\u00ed d\u1ee5, n\u1ebfu b\u1ea1n d\u00f9ng v\u0103n b\u1ea3n m\u00e0u \u0111\u1ecf \u0111\u1ec3 ch\u1ec9 ra l\u1ed7i, h\u00e3y th\u00eam bi\u1ec3u t\u01b0\u1ee3ng ho\u1eb7c th\u00f4ng b\u00e1o v\u0103n b\u1ea3n gi\u1ea3i th\u00edch l\u1ed7i.<\/p>\n<h3>Ch\u1eef v\u00e0 kho\u1ea3ng c\u00e1ch<\/h3>\n<p>Ch\u1ecdn ph\u00f4ng ch\u1eef v\u00e0 kho\u1ea3ng c\u00e1ch \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn kh\u1ea3 n\u0103ng \u0111\u1ecdc. C\u00e1c ph\u00f4ng ch\u1eef sans-serif n\u00f3i chung d\u1ec5 \u0111\u1ecdc h\u01a1n tr\u00ean m\u00e0n h\u00ecnh so v\u1edbi ph\u00f4ng ch\u1eef serif.<\/p>\n<ul>\n<li><strong>K\u00edch th\u01b0\u1edbc ch\u1eef:<\/strong>K\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef c\u01a1 b\u1ea3n ph\u1ea3i \u00edt nh\u1ea5t l\u00e0 16px. Tr\u00e1nh ch\u1ec9 d\u00f9ng k\u00edch th\u01b0\u1edbc \u0111\u1ec3 th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 quan tr\u1ecdng.<\/li>\n<li><strong>Chi\u1ec1u cao d\u00f2ng:<\/strong>\u0110\u1ea3m b\u1ea3o chi\u1ec1u cao d\u00f2ng \u00edt nh\u1ea5t b\u1eb1ng 1,5 l\u1ea7n k\u00edch th\u01b0\u1edbc ch\u1eef \u0111\u1ec3 tr\u00e1nh c\u00e1c d\u00f2ng b\u1ecb d\u00ednh v\u00e0o nhau v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c.<\/li>\n<li><strong>Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c ch\u1eef:<\/strong>T\u0103ng kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c ch\u1eef \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng \u0111\u1ecdc cho ng\u01b0\u1eddi \u0111\u1ecdc kh\u00f3 \u0111\u1ecdc ho\u1eb7c th\u1ecb l\u1ef1c k\u00e9m.<\/li>\n<li><strong>Kho\u1ea3ng c\u00e1ch \u0111o\u1ea1n v\u0103n:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00f3 kho\u1ea3ng c\u00e1ch \u0111\u1ee7 gi\u1eefa c\u00e1c \u0111o\u1ea1n v\u0103n \u0111\u1ec3 t\u00e1ch bi\u1ec7t c\u00e1c kh\u1ed1i v\u0103n b\u1ea3n.<\/li>\n<\/ul>\n<h2>\u2328\ufe0f Ti\u00eau chu\u1ea9n t\u01b0\u01a1ng t\u00e1c v\u00e0 \u0111i\u1ec1u h\u01b0\u1edbng<\/h2>\n<p>Thi\u1ebft k\u1ebf t\u01b0\u01a1ng t\u00e1c ph\u1ea3i xem x\u00e9t \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng chu\u1ed9t. Bao g\u1ed3m c\u1ea3 nh\u1eefng ng\u01b0\u1eddi c\u00f3 khi\u1ebfm khuy\u1ebft v\u1eadn \u0111\u1ed9ng ph\u1ea3i d\u1ef1a v\u00e0o b\u00e0n ph\u00edm, thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng gi\u1ecdng n\u00f3i.<\/p>\n<h3>\u0110i\u1ec1u h\u01b0\u1edbng b\u1eb1ng b\u00e0n ph\u00edm<\/h3>\n<p>Ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 th\u1ec3 \u0111i\u1ec1u h\u01b0\u1edbng to\u00e0n b\u1ed9 giao di\u1ec7n ch\u1ec9 b\u1eb1ng b\u00e0n ph\u00edm. Th\u1ee9 t\u1ef1 chuy\u1ec3n tab ph\u1ea3i h\u1ee3p l\u00fd, tu\u00e2n theo tr\u00ecnh t\u1ef1 th\u1ecb gi\u00e1c c\u1ee7a trang.<\/p>\n<ul>\n<li><strong>Th\u1ee9 t\u1ef1 chuy\u1ec3n tab:<\/strong>\u0110\u1ea3m b\u1ea3o \u0111i\u1ec3m t\u1eadp trung di chuy\u1ec3n m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd qua giao di\u1ec7n.<\/li>\n<li><strong>Ch\u1ec9 b\u00e1o \u0111i\u1ec3m t\u1eadp trung:<\/strong>Kh\u00f4ng bao gi\u1edd lo\u1ea1i b\u1ecf vi\u1ec1n \u0111i\u1ec3m t\u1eadp trung m\u1eb7c \u0111\u1ecbnh. N\u1ebfu b\u1ea1n t\u00f9y ch\u1ec9nh n\u00f3, h\u00e3y \u0111\u1ea3m b\u1ea3o n\u00f3 hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng v\u00e0 kh\u00e1c bi\u1ec7t v\u1edbi n\u1ed9i dung xung quanh.<\/li>\n<li><strong>Li\u00ean k\u1ebft b\u1ecf qua:<\/strong>Cung c\u1ea5p ph\u01b0\u01a1ng ti\u1ec7n \u0111\u1ec3 b\u1ecf qua n\u1ed9i dung l\u1eb7p l\u1ea1i, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c menu \u0111i\u1ec1u h\u01b0\u1edbng.<\/li>\n<\/ul>\n<h3>Qu\u1ea3n l\u00fd \u0111i\u1ec3m t\u1eadp trung<\/h3>\n<p>Khi n\u1ed9i dung thay \u0111\u1ed5i \u0111\u1ed9ng, \u0111i\u1ec3m t\u1eadp trung ph\u1ea3i \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd \u0111\u00fang c\u00e1ch. V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t h\u1ed9p tho\u1ea1i hi\u1ec7n l\u00ean, \u0111i\u1ec3m t\u1eadp trung ph\u1ea3i di chuy\u1ec3n v\u00e0o trong h\u1ed9p tho\u1ea1i. Khi \u0111\u00f3ng l\u1ea1i, \u0111i\u1ec3m t\u1eadp trung ph\u1ea3i quay tr\u1edf l\u1ea1i ph\u1ea7n t\u1eed \u0111\u00e3 k\u00edch ho\u1ea1t n\u00f3.<\/p>\n<h3>C\u00e1c m\u1ee5c ch\u1ea1m<\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c giao di\u1ec7n di \u0111\u1ed9ng v\u00e0 ch\u1ea1m, c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u00e1c ph\u1ea3i \u0111\u1ee7 l\u1edbn \u0111\u1ec3 ch\u1ea1m ch\u00ednh x\u00e1c.<\/p>\n<ul>\n<li><strong>K\u00edch th\u01b0\u1edbc t\u1ed1i thi\u1ec3u:<\/strong>C\u00e1c m\u1ee5c ch\u1ea1m ph\u1ea3i c\u00f3 k\u00edch th\u01b0\u1edbc \u00edt nh\u1ea5t l\u00e0 44\u00d744 pixel CSS.<\/li>\n<li><strong>Kho\u1ea3ng c\u00e1ch:<\/strong>\u0110\u1ea3m b\u1ea3o kho\u1ea3ng c\u00e1ch \u0111\u1ee7 gi\u1eefa c\u00e1c m\u1ee5c \u0111\u1ec3 tr\u00e1nh k\u00edch ho\u1ea1t nh\u1ea7m.<\/li>\n<\/ul>\n<h2>\ud83d\udcdd N\u1ed9i dung v\u00e0 c\u1ea5u tr\u00fac ng\u1eef ngh\u0129a<\/h2>\n<p>C\u1ea5u tr\u00fac n\u1ed9i dung gi\u00fap c\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 hi\u1ec3u \u0111\u01b0\u1ee3c th\u1ee9 b\u1eadc v\u00e0 \u00fd ngh\u0129a c\u1ee7a th\u00f4ng tin. HTML ng\u1eef ngh\u0129a l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a c\u1ea5u tr\u00fac n\u00e0y.<\/p>\n<h3>Ti\u00eau \u0111\u1ec1 v\u00e0 th\u1ee9 b\u1eadc<\/h3>\n<p>S\u1eed d\u1ee5ng ti\u00eau \u0111\u1ec1 \u0111\u1ec3 c\u1ea5u tr\u00fac n\u1ed9i dung m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd. Ng\u01b0\u1eddi d\u00f9ng th\u01b0\u1eddng b\u1ecf qua c\u00e1c ti\u00eau \u0111\u1ec1 \u0111\u1ec3 t\u00ecm th\u00f4ng tin nhanh ch\u00f3ng.<\/p>\n<ul>\n<li><strong>Th\u1ee9 t\u1ef1 h\u1ee3p l\u00fd:<\/strong>Kh\u00f4ng \u0111\u01b0\u1ee3c b\u1ecf qua c\u1ea5p \u0111\u1ed9 ti\u00eau \u0111\u1ec1. \u0110i t\u1eeb H1 sang H2, r\u1ed3i H3. Kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1ea3y t\u1eeb H1 sang H4.<\/li>\n<li><strong>V\u0103n b\u1ea3n m\u00f4 t\u1ea3:<\/strong>C\u00e1c ti\u00eau \u0111\u1ec1 ph\u1ea3i m\u00f4 t\u1ea3 r\u00f5 r\u00e0ng n\u1ed9i dung \u0111i sau ch\u00fang.<\/li>\n<\/ul>\n<h3>Bi\u1ec3u m\u1eabu v\u00e0 nh\u00e3n<\/h3>\n<p>Bi\u1ec3u m\u1eabu l\u00e0 c\u00e1c \u0111i\u1ec3m t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi nh\u00e3n r\u00f5 r\u00e0ng v\u00e0 x\u1eed l\u00fd l\u1ed7i.<\/p>\n<ul>\n<li><strong>Nh\u00e3n li\u00ean k\u1ebft:<\/strong>M\u1ed7i tr\u01b0\u1eddng nh\u1eadp li\u1ec7u ph\u1ea3i c\u00f3 nh\u00e3n \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u01b0\u01a1ng tr\u00ecnh v\u1edbi n\u00f3.<\/li>\n<li><strong>Nh\u1eadn di\u1ec7n l\u1ed7i:<\/strong>L\u1ed7i ph\u1ea3i \u0111\u01b0\u1ee3c nh\u1eadn di\u1ec7n b\u1eb1ng v\u0103n b\u1ea3n v\u00e0 \u0111\u01b0\u1ee3c tr\u00ecnh \u0111\u1ecdc m\u00e0n h\u00ecnh th\u00f4ng b\u00e1o.<\/li>\n<li><strong>G\u1ee3i \u00fd s\u1eeda l\u1ed7i:<\/strong>Cung c\u1ea5p g\u1ee3i \u00fd v\u1ec1 c\u00e1ch s\u1eeda l\u1ed7i.<\/li>\n<\/ul>\n<h3>H\u00ecnh \u1ea3nh v\u00e0 bi\u1ec3u t\u01b0\u1ee3ng<\/h3>\n<p>H\u00ecnh \u1ea3nh truy\u1ec1n t\u1ea3i th\u00f4ng tin m\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y ph\u1ea3i \u0111\u01b0\u1ee3c truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<ul>\n<li><strong>V\u0103n b\u1ea3n thay th\u1ebf:<\/strong>Cung c\u1ea5p v\u0103n b\u1ea3n thay th\u1ebf th\u1ec3 hi\u1ec7n c\u00f9ng ch\u1ee9c n\u0103ng ho\u1eb7c \u00fd ngh\u0129a nh\u01b0 h\u00ecnh \u1ea3nh.<\/li>\n<li><strong>H\u00ecnh \u1ea3nh trang tr\u00ed:<\/strong>N\u1ebfu m\u1ed9t h\u00ecnh \u1ea3nh ch\u1ec9 mang t\u00ednh trang tr\u00ed, h\u00e3y \u0111\u00e1nh d\u1ea5u n\u00f3 nh\u01b0 v\u1eady \u0111\u1ec3 tr\u00ecnh \u0111\u1ecdc m\u00e0n h\u00ecnh b\u1ecf qua n\u00f3.<\/li>\n<li><strong>H\u00ecnh \u1ea3nh ph\u1ee9c t\u1ea1p:<\/strong>Cung c\u1ea5p m\u00f4 t\u1ea3 d\u00e0i cho c\u00e1c bi\u1ec3u \u0111\u1ed3 ho\u1eb7c s\u01a1 \u0111\u1ed3 ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n<h2>\ud83d\udcca Nh\u1eefng sai l\u1ea7m thi\u1ebft k\u1ebf ph\u1ed5 bi\u1ebfn so v\u1edbi c\u00e1c gi\u1ea3i ph\u00e1p<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3ng li\u1ec7t k\u00ea c\u00e1c v\u1ea5n \u0111\u1ec1 thi\u1ebft k\u1ebf ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p truy c\u1eadp \u0111\u01b0\u1ee3c.<\/p>\n<table>\n<thead>\n<tr>\n<th>Sai l\u1ea7m ph\u1ed5 bi\u1ebfn<\/th>\n<th>V\u1ea5n \u0111\u1ec1 truy c\u1eadp<\/th>\n<th>Gi\u1ea3i ph\u00e1p<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>V\u0103n b\u1ea3n c\u00f3 \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n th\u1ea5p<\/td>\n<td>V\u0103n b\u1ea3n kh\u00f3 \u0111\u1ecdc \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng th\u1ecb l\u1ef1c k\u00e9m.<\/td>\n<td>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ki\u1ec3m tra \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ef7 l\u1ec7 4.5:1.<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ec9 s\u1eed d\u1ee5ng m\u00e0u s\u1eafc \u0111\u1ec3 ch\u1ec9 th\u1ecb<\/td>\n<td>Ng\u01b0\u1eddi b\u1ecb m\u00f9 m\u00e0u kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t tr\u1ea1ng th\u00e1i.<\/td>\n<td>Th\u00eam bi\u1ec3u t\u01b0\u1ee3ng ho\u1eb7c nh\u00e3n v\u0103n b\u1ea3n \u0111i k\u00e8m m\u00e0u s\u1eafc.<\/td>\n<\/tr>\n<tr>\n<td>Thi\u1ebfu tr\u1ea1ng th\u00e1i t\u1eadp trung<\/td>\n<td>Ng\u01b0\u1eddi d\u00f9ng b\u00e0n ph\u00edm kh\u00f4ng th\u1ec3 th\u1ea5y m\u00ecnh \u0111ang \u1edf \u0111\u00e2u.<\/td>\n<td>Thi\u1ebft k\u1ebf c\u00e1c ch\u1ec9 b\u00e1o t\u1eadp trung r\u00f5 r\u00e0ng cho t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u00e1c.<\/td>\n<\/tr>\n<tr>\n<td>Nh\u00e3n bi\u1ec3u m\u1eabu kh\u00f4ng r\u00f5 r\u00e0ng<\/td>\n<td>C\u00e1c tr\u00ecnh \u0111\u1ecdc m\u00e0n h\u00ecnh kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c tr\u01b0\u1eddng nh\u1eadp li\u1ec7u.<\/td>\n<td>\u0110\u1ea3m b\u1ea3o m\u1ecdi tr\u01b0\u1eddng nh\u1eadp \u0111\u1ec1u c\u00f3 nh\u00e3n t\u01b0\u01a1ng \u1ee9ng.<\/td>\n<\/tr>\n<tr>\n<td>Ph\u01b0\u01a1ng ti\u1ec7n t\u1ef1 \u0111\u1ed9ng ph\u00e1t<\/td>\n<td>G\u00e2y kh\u00f3 ch\u1ecbu cho ng\u01b0\u1eddi d\u00f9ng v\u00e0 ng\u0103n c\u1ea3n s\u1ef1 t\u1eadp trung.<\/td>\n<td>T\u1eaft ch\u1ebf \u0111\u1ed9 t\u1ef1 \u0111\u1ed9ng ph\u00e1t ho\u1eb7c cung c\u1ea5p n\u00fat t\u1ea1m d\u1eebng ngay l\u1eadp t\u1ee9c.<\/td>\n<\/tr>\n<tr>\n<td>C\u00e1c m\u1ee5c ch\u1ea1m nh\u1ecf<\/td>\n<td>Kh\u00f3 kh\u0103n \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi d\u00f9ng c\u00f3 khi\u1ebfm khuy\u1ebft v\u1eadn \u0111\u1ed9ng.<\/td>\n<td>\u0110\u1ea3m b\u1ea3o c\u00e1c m\u1ee5c c\u00f3 k\u00edch th\u01b0\u1edbc \u00edt nh\u1ea5t 44\u00d744 pixel.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\ud83e\uddea Ki\u1ec3m th\u1eed thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n<\/h2>\n<p>Thi\u1ebft k\u1ebf cho kh\u1ea3 n\u0103ng truy c\u1eadp s\u1ebd kh\u00f4ng ho\u00e0n ch\u1ec9nh n\u1ebfu kh\u00f4ng ki\u1ec3m th\u1eed. C\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng h\u1eefu \u00edch, nh\u01b0ng ch\u00fang kh\u00f4ng th\u1ec3 ph\u00e1t hi\u1ec7n m\u1ecdi th\u1ee9.<\/p>\n<h3>Ki\u1ec3m to\u00e1n t\u1ef1 \u0111\u1ed9ng<\/h3>\n<p>S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u01b0 thi\u1ebfu v\u0103n b\u1ea3n thay th\u1ebf, \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n th\u1ea5p ho\u1eb7c c\u00e1c t\u1ed5 h\u1ee3p m\u00e0u kh\u00f4ng h\u1ee3p l\u1ec7. Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y cung c\u1ea5p n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n cho vi\u1ec7c tu\u00e2n th\u1ee7.<\/p>\n<ul>\n<li><strong>Ki\u1ec3m tra t\u1ef7 l\u1ec7 m\u00e0u s\u1eafc:<\/strong>X\u00e1c minh m\u1ee9c \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n tr\u00ean to\u00e0n h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf.<\/li>\n<li><strong>X\u00e1c minh c\u1ea5u tr\u00fac:<\/strong> \u0110\u1ea3m b\u1ea3o c\u00e1c th\u1ebb ng\u1eef ngh\u0129a \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u00fang c\u00e1ch.<\/li>\n<li><strong>Xem x\u00e9t v\u0103n b\u1ea3n thay th\u1ebf (Alt Text):<\/strong> Ki\u1ec3m tra xem t\u1ea5t c\u1ea3 h\u00ecnh \u1ea3nh c\u00f3 m\u00f4 t\u1ea3 hay kh\u00f4ng.<\/li>\n<\/ul>\n<h3>Ki\u1ec3m tra th\u1ee7 c\u00f4ng<\/h3>\n<p>C\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng b\u1ecf qua ng\u1eef c\u1ea3nh. Ki\u1ec3m tra th\u1ee7 c\u00f4ng \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng l\u00e0 h\u1ee3p l\u00fd.<\/p>\n<ul>\n<li><strong>Ch\u1ec9 s\u1eed d\u1ee5ng b\u00e0n ph\u00edm:<\/strong> \u0110i\u1ec1u h\u01b0\u1edbng giao di\u1ec7n c\u1ee7a b\u1ea1n ch\u1ec9 b\u1eb1ng ph\u00edm Tab. B\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp m\u1ecdi th\u1ee9 kh\u00f4ng?<\/li>\n<li><strong>Ph\u00f3ng to:<\/strong> Ph\u00f3ng to giao di\u1ec7n l\u00ean 200%. N\u1ed9i dung c\u00f3 b\u1ecb l\u1ed7i ho\u1eb7c ch\u1ed3ng ch\u00e9o kh\u00f4ng?<\/li>\n<li><strong>Th\u1ee9 t\u1ef1 t\u1eadp trung:<\/strong> Th\u1ee9 t\u1ef1 t\u1eadp trung c\u00f3 di chuy\u1ec3n h\u1ee3p l\u00fd qua giao di\u1ec7n kh\u00f4ng?<\/li>\n<\/ul>\n<h3>Ki\u1ec3m th\u1eed ng\u01b0\u1eddi d\u00f9ng<\/h3>\n<p>Kh\u00f4ng g\u00ec v\u01b0\u1ee3t \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i t\u1eeb ng\u01b0\u1eddi d\u00f9ng th\u1ef1c t\u1ebf. H\u00e3y \u0111\u01b0a ng\u01b0\u1eddi khuy\u1ebft t\u1eadt v\u00e0o nghi\u00ean c\u1ee9u ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n.<\/p>\n<ul>\n<li><strong>Tuy\u1ec3n d\u1ee5ng ng\u01b0\u1eddi d\u00f9ng \u0111a d\u1ea1ng:<\/strong> Bao g\u1ed3m ng\u01b0\u1eddi d\u00f9ng c\u00f3 khi\u1ebfm khuy\u1ebft th\u1ecb gi\u00e1c, v\u1eadn \u0111\u1ed9ng v\u00e0 nh\u1eadn th\u1ee9c.<\/li>\n<li><strong>Quan s\u00e1t c\u00e1c nhi\u1ec7m v\u1ee5:<\/strong> Quan s\u00e1t c\u00e1ch ng\u01b0\u1eddi d\u00f9ng ho\u00e0n th\u00e0nh c\u00e1c nhi\u1ec7m v\u1ee5 quan tr\u1ecdng m\u00e0 kh\u00f4ng can thi\u1ec7p.<\/li>\n<li><strong>Thu th\u1eadp ph\u1ea3n h\u1ed3i:<\/strong> H\u1ecfi ng\u01b0\u1eddi d\u00f9ng v\u1ec1 tr\u1ea3i nghi\u1ec7m v\u00e0 c\u00e1c \u0111i\u1ec3m kh\u00f3 kh\u0103n c\u1ee7a h\u1ecd.<\/li>\n<\/ul>\n<h2>\ud83c\udfdb\ufe0f Vai tr\u00f2 c\u1ee7a h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf<\/h2>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf l\u00e0 c\u00f4ng c\u1ee5 m\u1ea1nh m\u1ebd \u0111\u1ec3 m\u1edf r\u1ed9ng kh\u1ea3 n\u0103ng truy c\u1eadp. B\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p kh\u1ea3 n\u0103ng truy c\u1eadp v\u00e0o th\u01b0 vi\u1ec7n th\u00e0nh ph\u1ea7n, b\u1ea1n \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n tr\u00ean to\u00e0n b\u1ed9 s\u1ea3n ph\u1ea9m.<\/p>\n<ul>\n<li><strong>Th\u00e0nh ph\u1ea7n chu\u1ea9n h\u00f3a:<\/strong> T\u1ea1o c\u00e1c phi\u00ean b\u1ea3n kh\u1ea3 d\u1ee5ng cho n\u00fat b\u1ea5m, tr\u01b0\u1eddng nh\u1eadp v\u00e0 h\u1ed9p tho\u1ea1i.<\/li>\n<li><strong>Qu\u1ea3n l\u00fd token:<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1c token m\u00e0u s\u1eafc v\u00e0 kho\u1ea3ng c\u00e1ch \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 k\u00edch th\u01b0\u1edbc.<\/li>\n<li><strong>T\u00e0i li\u1ec7u:<\/strong> Ghi r\u00f5 y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng truy c\u1eadp cho t\u1eebng th\u00e0nh ph\u1ea7n.<\/li>\n<li><strong>Quy tr\u00ecnh xem x\u00e9t:<\/strong> Bao g\u1ed3m c\u00e1c ki\u1ec3m tra kh\u1ea3 n\u0103ng truy c\u1eadp trong quy tr\u00ecnh ph\u00ea duy\u1ec7t h\u1ec7 th\u1ed1ng thi\u1ebft k\u1ebf.<\/li>\n<\/ul>\n<h2>\u2696\ufe0f C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u00e1p l\u00fd v\u00e0 \u0111\u1ea1o \u0111\u1ee9c<\/h2>\n<p>V\u01b0\u1ee3t xa t\u00ednh kh\u1ea3 d\u1ee5ng, t\u00ednh kh\u1ea3 d\u1ee5ng th\u01b0\u1eddng l\u00e0 m\u1ed9t y\u00eau c\u1ea7u ph\u00e1p l\u00fd. C\u00e1c ch\u00ednh ph\u1ee7 v\u00e0 t\u1ed5 ch\u1ee9c th\u1ef1c thi c\u00e1c ti\u00eau chu\u1ea9n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o quy\u1ec1n truy c\u1eadp b\u00ecnh \u0111\u1eb3ng.<\/p>\n<h3>Tu\u00e2n th\u1ee7 ph\u00e1p l\u00fd<\/h3>\n<p>Nhi\u1ec1u lu\u1eadt kh\u00e1c nhau quy \u0111\u1ecbnh t\u00ednh kh\u1ea3 d\u1ee5ng s\u1ed1 h\u00f3a. Vi\u1ec7c kh\u00f4ng tu\u00e2n th\u1ee7 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ki\u1ec7n t\u1ee5ng v\u00e0 ph\u1ea1t ti\u1ec1n.<\/p>\n<ul>\n<li><strong>\u0110i\u1ec1u 508:<\/strong>Y\u00eau c\u1ea7u c\u00e1c c\u01a1 quan li\u00ean bang ph\u1ea3i \u0111\u1ea3m b\u1ea3o c\u00f4ng ngh\u1ec7 \u0111i\u1ec7n t\u1eed v\u00e0 th\u00f4ng tin kh\u1ea3 d\u1ee5ng.<\/li>\n<li><strong>ADA:<\/strong>\u0110\u1ea1o lu\u1eadt Ng\u01b0\u1eddi khuy\u1ebft t\u1eadt M\u1ef9 \u00e1p d\u1ee5ng cho c\u00e1c c\u01a1 s\u1edf c\u00f4ng c\u1ed9ng, bao g\u1ed3m c\u1ea3 c\u00e1c trang web.<\/li>\n<li><strong>Lu\u1eadt Ti\u00eau chu\u1ea9n Truy c\u1eadp Ch\u00e2u \u00c2u:<\/strong>\u0110\u1eb7t ra c\u00e1c ti\u00eau chu\u1ea9n cho s\u1ea3n ph\u1ea9m v\u00e0 d\u1ecbch v\u1ee5 t\u1ea1i Li\u00ean minh Ch\u00e2u \u00c2u.<\/li>\n<\/ul>\n<h3>Tr\u00e1ch nhi\u1ec7m \u0111\u1ea1o \u0111\u1ee9c<\/h3>\n<p>X\u00e2y d\u1ef1ng s\u1ea3n ph\u1ea9m bao dung l\u00e0 \u0111i\u1ec1u \u0111\u00fang \u0111\u1eafn c\u1ea7n l\u00e0m. Lo\u1ea1i tr\u1eeb ng\u01b0\u1eddi d\u00f9ng d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng s\u1ebd gi\u1edbi h\u1ea1n ti\u1ec1m n\u0103ng c\u1ee7a s\u1ea3n ph\u1ea9m b\u1ea1n v\u00e0 l\u00e0m m\u1ea5t l\u00f2ng m\u1ed9t b\u1ed9 ph\u1eadn l\u1edbn d\u00e2n c\u01b0.<\/p>\n<ul>\n<li><strong>Ph\u1ea1m vi th\u1ecb tr\u01b0\u1eddng:<\/strong>M\u1ed9t trong b\u1ed1n ng\u01b0\u1eddi tr\u01b0\u1edfng th\u00e0nh c\u00f3 khuy\u1ebft t\u1eadt. B\u1ecf qua t\u00ednh kh\u1ea3 d\u1ee5ng s\u1ebd l\u00e0m thu h\u1eb9p th\u1ecb tr\u01b0\u1eddng c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>Danh ti\u1ebfng th\u01b0\u01a1ng hi\u1ec7u:<\/strong>C\u00e1c c\u00f4ng ty \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi t\u00ednh bao dung s\u1ebd x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c ni\u1ec1m tin m\u1ea1nh m\u1ebd h\u01a1n v\u1edbi kh\u00e1ch h\u00e0ng.<\/li>\n<li><strong>B\u1ea3o v\u1ec7 t\u01b0\u01a1ng lai:<\/strong>Khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n, t\u00ednh kh\u1ea3 d\u1ee5ng \u0111\u1ea3m b\u1ea3o s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c.<\/li>\n<\/ul>\n<h2>\ud83d\udd04 C\u1eadp nh\u1eadt th\u01b0\u1eddng xuy\u00ean v\u1edbi nh\u1eefng thay \u0111\u1ed5i<\/h2>\n<p>C\u00e1c ti\u00eau chu\u1ea9n kh\u1ea3 d\u1ee5ng kh\u00f4ng ng\u1eebng thay \u0111\u1ed5i. C\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi v\u00e0 nhu c\u1ea7u ng\u01b0\u1eddi d\u00f9ng xu\u1ea5t hi\u1ec7n th\u01b0\u1eddng xuy\u00ean. Vi\u1ec7c c\u1eadp nh\u1eadt th\u00f4ng tin l\u00e0 \u0111i\u1ec1u then ch\u1ed1t.<\/p>\n<ul>\n<li><strong>Theo d\u00f5i c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt:<\/strong>Theo d\u00f5i c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt WCAG v\u00e0 c\u00e1c h\u01b0\u1edbng d\u1eabn m\u1edbi.<\/li>\n<li><strong>Tham gia c\u1ed9ng \u0111\u1ed3ng:<\/strong>Tham gia c\u00e1c c\u1ed9ng \u0111\u1ed3ng v\u00e0 di\u1ec5n \u0111\u00e0n v\u1ec1 kh\u1ea3 d\u1ee5ng.<\/li>\n<li><strong>H\u1ecdc t\u1eadp li\u00ean t\u1ee5c:<\/strong>D\u00e0nh th\u1eddi gian \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u00e1c k\u1ef9 thu\u1eadt v\u00e0 c\u00f4ng c\u1ee5 m\u1edbi.<\/li>\n<\/ul>\n<h2>\ud83d\udee0\ufe0f T\u00edch h\u1ee3p kh\u1ea3 d\u1ee5ng v\u00e0o quy tr\u00ecnh l\u00e0m vi\u1ec7c<\/h2>\n<p>\u0110\u1ec3 bi\u1ebfn kh\u1ea3 d\u1ee5ng th\u00e0nh th\u00f3i quen, h\u00e3y t\u00edch h\u1ee3p n\u00f3 v\u00e0o m\u1ecdi giai \u0111o\u1ea1n c\u1ee7a quy tr\u00ecnh thi\u1ebft k\u1ebf.<\/p>\n<h3>Giai \u0111o\u1ea1n nghi\u00ean c\u1ee9u<\/h3>\n<p>Bao g\u1ed3m t\u00ednh kh\u1ea3 d\u1ee5ng trong k\u1ebf ho\u1ea1ch nghi\u00ean c\u1ee9u ng\u01b0\u1eddi d\u00f9ng c\u1ee7a b\u1ea1n. X\u00e1c \u0111\u1ecbnh nh\u1eefng ng\u01b0\u1eddi d\u00f9ng khuy\u1ebft t\u1eadt c\u00f3 th\u1ec3 h\u01b0\u1edfng l\u1ee3i t\u1eeb s\u1ea3n ph\u1ea9m c\u1ee7a b\u1ea1n.<\/p>\n<h3>Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf<\/h3>\n<p>\u00c1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n truy c\u1eadp trong qu\u00e1 tr\u00ecnh ph\u00e1c th\u1ea3o v\u00e0 t\u1ea1o m\u1eabu. \u0110\u1eebng ch\u1edd \u0111\u1ebfn cu\u1ed1i c\u00f9ng m\u1edbi s\u1eeda l\u1ed7i.<\/p>\n<h3>Giao vi\u1ec7c ph\u00e1t tri\u1ec3n<\/h3>\n<p>Cung c\u1ea5p c\u00e1c th\u00f4ng s\u1ed1 r\u00f5 r\u00e0ng cho nh\u00e0 ph\u00e1t tri\u1ec3n. Bao g\u1ed3m c\u00e1c gi\u00e1 tr\u1ecb t\u01b0\u01a1ng ph\u1ea3n, tr\u1ea1ng th\u00e1i t\u1eadp trung v\u00e0 chi ti\u1ebft t\u01b0\u01a1ng t\u00e1c.<\/p>\n<h3>Giai \u0111o\u1ea1n ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n<p>Bao g\u1ed3m ki\u1ec3m th\u1eed truy c\u1eadp trong danh s\u00e1ch ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a b\u1ea1n. \u0110\u1ea3m b\u1ea3o c\u00e1c t\u00ednh n\u0103ng m\u1edbi kh\u00f4ng l\u00e0m h\u1ecfng kh\u1ea3 n\u0103ng truy c\u1eadp hi\u1ec7n c\u00f3.<\/p>\n<h2>\ud83d\udd0d Kh\u00e1m ph\u00e1 s\u00e2u v\u1ec1 c\u00e1c ti\u00eau ch\u00ed th\u00e0nh c\u00f4ng c\u1ee5 th\u1ec3<\/h2>\n<p>Hi\u1ec3u r\u00f5 c\u00e1c ti\u00eau ch\u00ed th\u00e0nh c\u00f4ng c\u1ee5 th\u1ec3 s\u1ebd gi\u00fap b\u1ea1n \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n<h3>1.1.1 N\u1ed9i dung kh\u00f4ng ph\u1ea3i v\u0103n b\u1ea3n<\/h3>\n<p>M\u1ecdi n\u1ed9i dung kh\u00f4ng ph\u1ea3i v\u0103n b\u1ea3n \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb cho ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 b\u1ea3n thay th\u1ebf b\u1eb1ng v\u0103n b\u1ea3n ph\u1ee5c v\u1ee5 m\u1ee5c \u0111\u00edch t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<ul>\n<li><strong>H\u00ecnh \u1ea3nh:<\/strong>V\u0103n b\u1ea3n thay th\u1ebf ph\u1ea3i m\u00f4 t\u1ea3 n\u1ed9i dung.<\/li>\n<li><strong>N\u00fat b\u1ea5m:<\/strong>N\u1ebfu m\u1ed9t bi\u1ec3u t\u01b0\u1ee3ng l\u00e0 n\u00fat b\u1ea5m, thu\u1ed9c t\u00ednh aria-label ph\u1ea3i m\u00f4 t\u1ea3 h\u00e0nh \u0111\u1ed9ng.<\/li>\n<\/ul>\n<h3>2.4.7 Hi\u1ec3n th\u1ecb \u0111i\u1ec3m t\u1eadp trung<\/h3>\n<p>M\u1ecdi giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 thao t\u00e1c b\u1eb1ng b\u00e0n ph\u00edm \u0111\u1ec1u ph\u1ea3i c\u00f3 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng m\u00e0 ch\u1ec9 b\u00e1o t\u1eadp trung b\u1eb1ng b\u00e0n ph\u00edm l\u00e0 r\u00f5 r\u00e0ng.<\/p>\n<ul>\n<li><strong>Kh\u1ea3 n\u0103ng nh\u00ecn th\u1ea5y:<\/strong>Ch\u1ec9 b\u00e1o t\u1eadp trung ph\u1ea3i r\u00f5 r\u00e0ng khi nh\u00ecn th\u1ea5y tr\u00ean n\u1ec1n.<\/li>\n<li><strong>T\u01b0\u01a1ng ph\u1ea3n:<\/strong>Ch\u1ec9 b\u00e1o t\u1eadp trung ph\u1ea3i \u0111\u00e1p \u1ee9ng t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n 3:1.<\/li>\n<\/ul>\n<h3>3.3.3 G\u1ee3i \u00fd l\u1ed7i<\/h3>\n<p>N\u1ebfu ph\u00e1t hi\u1ec7n l\u1ed7i nh\u1eadp li\u1ec7u, h\u1ec7 th\u1ed1ng s\u1ebd g\u1ee3i \u00fd c\u00e1ch s\u1eeda l\u1ed7i.<\/p>\n<ul>\n<li><strong>R\u00f5 r\u00e0ng:<\/strong>C\u00e1c g\u1ee3i \u00fd ph\u1ea3i r\u00f5 r\u00e0ng v\u00e0 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng truy c\u1eadp:<\/strong>G\u1ee3i \u00fd ph\u1ea3i \u0111\u01b0\u1ee3c li\u00ean k\u1ebft ch\u01b0\u01a1ng tr\u00ecnh v\u1edbi tr\u01b0\u1eddng nh\u1eadp li\u1ec7u.<\/li>\n<\/ul>\n<h3>4.1.2 T\u00ean, Vai tr\u00f2, Gi\u00e1 tr\u1ecb<\/h3>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, t\u00ean v\u00e0 vai tr\u00f2 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c b\u1eb1ng ch\u01b0\u01a1ng tr\u00ecnh.<\/p>\n<ul>\n<li><strong>HTML ng\u1eef ngh\u0129a:<\/strong>S\u1eed d\u1ee5ng c\u00e1c ph\u1ea7n t\u1eed HTML b\u1ea3n \u0111\u1ecba khi c\u00f3 th\u1ec3.<\/li>\n<li><strong>ARIA:<\/strong>S\u1eed d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh ARIA ch\u1ec9 khi HTML b\u1ea3n \u0111\u1ecba kh\u00f4ng \u0111\u1ee7.<\/li>\n<\/ul>\n<h2>\ud83d\udca1 M\u1eb9o th\u1ef1c t\u1ebf cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf<\/h2>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng m\u1eb9o th\u1ef1c t\u1ebf \u0111\u1ec3 c\u1ea3i thi\u1ec7n quy tr\u00ecnh thi\u1ebft k\u1ebf h\u00e0ng ng\u00e0y c\u1ee7a b\u1ea1n.<\/p>\n<ul>\n<li><strong>S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 ki\u1ec3m tra \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n:<\/strong>Gi\u1eef s\u1eb5n m\u1ed9t ti\u1ec7n \u00edch ho\u1eb7c c\u00f4ng c\u1ee5 ki\u1ec3m tra \u0111\u1ed9 t\u01b0\u01a1ng ph\u1ea3n khi thi\u1ebft k\u1ebf.<\/li>\n<li><strong>Ki\u1ec3m tra k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef:<\/strong>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 v\u0103n b\u1ea3n \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb \u0111\u00fang k\u00edch th\u01b0\u1edbc khi k\u00edch th\u01b0\u1edbc ph\u00f4ng ch\u1eef tr\u00ecnh duy\u1ec7t \u0111\u01b0\u1ee3c t\u0103ng l\u00ean.<\/li>\n<li><strong>Th\u1eed nghi\u1ec7m v\u1edbi ph\u1ea7n m\u1ec1m \u0111\u1ecdc m\u00e0n h\u00ecnh:<\/strong>Th\u1ec9nh tho\u1ea3ng th\u1eed nghi\u1ec7m c\u00e1c b\u1ea3n m\u1eabu c\u1ee7a b\u1ea1n v\u1edbi ph\u1ea7n m\u1ec1m \u0111\u1ecdc m\u00e0n h\u00ecnh \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng.<\/li>\n<li><strong>Xem x\u00e9t c\u00f9ng \u0111\u1ed3ng nghi\u1ec7p:<\/strong>Y\u00eau c\u1ea7u \u0111\u1ed3ng nghi\u1ec7p xem x\u00e9t thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n \u0111\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp.<\/li>\n<li><strong>T\u00e0i li\u1ec7u c\u00e1c quy\u1ebft \u0111\u1ecbnh:<\/strong>Gi\u1ea3i th\u00edch l\u00fd do t\u1ea1i sao b\u1ea1n \u0111\u01b0a ra nh\u1eefng l\u1ef1a ch\u1ecdn nh\u1ea5t \u0111\u1ecbnh v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp trong ghi ch\u00fa thi\u1ebft k\u1ebf c\u1ee7a m\u00ecnh.<\/li>\n<\/ul>\n<h2>\ud83c\udf0d Ti\u00eau chu\u1ea9n to\u00e0n c\u1ea7u<\/h2>\n<p>M\u1eb7c d\u00f9 WCAG l\u00e0 ti\u00eau chu\u1ea9n ch\u00ednh, c\u00e1c khu v\u1ef1c kh\u00e1c c\u0169ng c\u00f3 h\u01b0\u1edbng d\u1eabn ri\u00eang th\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi n\u00f3.<\/p>\n<ul>\n<li><strong>ISO 9241:<\/strong>Y\u00eau c\u1ea7u v\u1ec1 ergonomics cho c\u00f4ng vi\u1ec7c v\u0103n ph\u00f2ng v\u1edbi c\u00e1c thi\u1ebft b\u1ecb hi\u1ec3n th\u1ecb h\u00ecnh \u1ea3nh.<\/li>\n<li><strong>EN 301 549:<\/strong>Ti\u00eau chu\u1ea9n ch\u00e2u \u00c2u v\u1ec1 kh\u1ea3 n\u0103ng truy c\u1eadp trong c\u00e1c c\u01a1 quan c\u00f4ng quy\u1ec1n.<\/li>\n<li><strong>\u0110i\u1ec1u 508:<\/strong>Ti\u00eau chu\u1ea9n li\u00ean bang c\u1ee7a Hoa K\u1ef3.<\/li>\n<\/ul>\n<p>Ch\u1ea5p h\u00e0nh WCAG 2.1 AA th\u01b0\u1eddng \u0111\u00e1p \u1ee9ng ph\u1ea7n l\u1edbn c\u00e1c y\u00eau c\u1ea7u khu v\u1ef1c n\u00e0y.<\/p>\n<h2>\ud83d\udea7 X\u1eed l\u00fd c\u00e1c tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7<\/h2>\n<p>\u0110\u00f4i khi, m\u1ed9t y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u00f3 th\u1ec3 m\u00e2u thu\u1eabn v\u1edbi ti\u00eau chu\u1ea9n kh\u1ea3 n\u0103ng truy c\u1eadp. Trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y, h\u00e3y ghi l\u1ea1i ngo\u1ea1i l\u1ec7 v\u00e0 cung c\u1ea5p gi\u1ea3i ph\u00e1p thay th\u1ebf.<\/p>\n<ul>\n<li><strong>L\u00fd do:<\/strong>Gi\u1ea3i th\u00edch l\u00fd do t\u1ea1i sao ngo\u1ea1i l\u1ec7 n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p thay th\u1ebf:<\/strong>Cung c\u1ea5p m\u1ed9t gi\u1ea3i ph\u00e1p kh\u1ea3 n\u0103ng truy c\u1eadp thay th\u1ebf cho ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng ngo\u1ea1i l\u1ec7.<\/li>\n<li><strong>Ph\u00ea duy\u1ec7t:<\/strong>Xin ph\u00ea duy\u1ec7t t\u1eeb c\u00e1c b\u00ean li\u00ean quan tr\u01b0\u1edbc khi tri\u1ec3n khai c\u00e1c ngo\u1ea1i l\u1ec7.<\/li>\n<\/ul>\n<h2>\ud83d\udce2 Th\u00fac \u0111\u1ea9y v\u00e0 L\u00e3nh \u0111\u1ea1o<\/h2>\n<p>C\u00e1c nh\u00e0 thi\u1ebft k\u1ebf th\u01b0\u1eddng c\u1ea7n th\u00fac \u0111\u1ea9y t\u00ednh kh\u1ea3 d\u1ee5ng trong \u0111\u1ed9i nh\u00f3m v\u00e0 t\u1ed5 ch\u1ee9c c\u1ee7a h\u1ecd.<\/p>\n<ul>\n<li><strong>Gi\u00e1o d\u1ee5c c\u00e1c b\u00ean li\u00ean quan:<\/strong>Gi\u1ea3i th\u00edch gi\u00e1 tr\u1ecb kinh doanh c\u1ee7a t\u00ednh kh\u1ea3 d\u1ee5ng.<\/li>\n<li><strong>Chia s\u1ebb t\u00e0i nguy\u00ean:<\/strong>Cung c\u1ea5p c\u00e1c b\u00e0i vi\u1ebft v\u00e0 h\u01b0\u1edbng d\u1eabn cho \u0111\u1ed9i nh\u00f3m c\u1ee7a b\u1ea1n.<\/li>\n<li><strong>L\u00e0m g\u01b0\u01a1ng b\u1eb1ng h\u00e0nh \u0111\u1ed9ng:<\/strong>L\u00e0m cho c\u00f4ng vi\u1ec7c c\u1ee7a ch\u00ednh b\u1ea1n kh\u1ea3 d\u1ee5ng v\u00e0 chia s\u1ebb n\u00f3 nh\u01b0 m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o.<\/li>\n<\/ul>\n<h2>\ud83d\udd17 T\u00e0i nguy\u00ean \u0111\u1ec3 h\u1ecdc t\u1eadp s\u00e2u h\u01a1n<\/h2>\n<p>C\u00f3 r\u1ea5t nhi\u1ec1u t\u00e0i nguy\u00ean s\u1eb5n s\u00e0ng \u0111\u1ec3 gi\u00fap b\u1ea1n m\u1edf r\u1ed9ng ki\u1ebfn th\u1ee9c.<\/p>\n<ul>\n<li><strong>Trang web ch\u00ednh th\u1ee9c WCAG:<\/strong>Ngu\u1ed3n ch\u00ednh \u0111\u1ec3 tham kh\u1ea3o c\u00e1c h\u01b0\u1edbng d\u1eabn.<\/li>\n<li><strong>H\u01b0\u1edbng d\u1eabn WAI:<\/strong>T\u00e0i li\u1ec7u gi\u00e1o d\u1ee5c v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng.<\/li>\n<li><strong>\u0110\u1ea1i h\u1ecdc Deque:<\/strong>\u0110\u00e0o t\u1ea1o v\u00e0 ch\u1ee9ng nh\u1eadn cho c\u00e1c chuy\u00ean gia v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng.<\/li>\n<li><strong>D\u1ef1 \u00e1n A11y:<\/strong>Danh s\u00e1ch ki\u1ec3m tra v\u00e0 t\u00e0i nguy\u00ean do c\u1ed9ng \u0111\u1ed3ng d\u1eabn d\u1eaft.<\/li>\n<\/ul>\n<p>B\u1eb1ng vi\u1ec7c cam k\u1ebft tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n n\u00e0y, b\u1ea1n \u0111ang g\u00f3p ph\u1ea7n x\u00e2y d\u1ef1ng m\u1ed9t m\u00f4i tr\u01b0\u1eddng k\u1ef9 thu\u1eadt s\u1ed1 bao h\u00e0m h\u01a1n. T\u00ednh kh\u1ea3 d\u1ee5ng l\u00e0 m\u1ed9t h\u00e0nh tr\u00ecnh li\u00ean t\u1ee5c, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u00edch \u0111\u1ebfn. H\u00e3y lu\u00f4n t\u00f2 m\u00f2, ti\u1ebfp t\u1ee5c h\u1ecdc h\u1ecfi v\u00e0 \u01b0u ti\u00ean t\u00ednh bao h\u00e0m trong m\u1ecdi quy\u1ebft \u0111\u1ecbnh thi\u1ebft k\u1ebf.<\/p>\n<p>T\u01b0\u01a1ng lai c\u1ee7a thi\u1ebft k\u1ebf l\u00e0 bao h\u00e0m. Thi\u1ebft k\u1ebf c\u1ee7a b\u1ea1n c\u00f3 s\u1ee9c m\u1ea1nh \u0111\u1ec3 trao quy\u1ec1n cho ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u1ea1o ra nh\u1eefng tr\u1ea3i nghi\u1ec7m ho\u1ea1t \u0111\u1ed9ng t\u1ed1t cho m\u1ecdi ng\u01b0\u1eddi. B\u1eaft \u0111\u1ea7u \u00e1p d\u1ee5ng c\u00e1c ti\u00eau chu\u1ea9n n\u00e0y ngay h\u00f4m nay.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m k\u1ef9 thu\u1eadt s\u1ed1 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t cho m\u1ecdi ng\u01b0\u1eddi l\u00e0 m\u1ed9t tr\u00e1ch nhi\u1ec7m c\u1ed1t l\u00f5i c\u1ee7a thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m hi\u1ec7n \u0111\u1ea1i. Truy c\u1eadp kh\u00f4ng&hellip;<\/p>\n","protected":false},"author":1,"featured_media":233,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Ti\u00eau chu\u1ea9n v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m: M\u1ed9t h\u01b0\u1edbng d\u1eabn \ud83c\udfa8","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1c ti\u00eau chu\u1ea9n thi\u1ebft y\u1ebfu v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng d\u00e0nh cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf UX. H\u01b0\u1edbng d\u1eabn WCAG, t\u1ef7 l\u1ec7 t\u01b0\u01a1ng ph\u1ea3n v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t v\u1ec1 \u0111i\u1ec1u h\u01b0\u1edbng b\u1eb1ng b\u00e0n ph\u00edm cho c\u00e1c s\u1ea3n ph\u1ea9m bao h\u00e0m.","inline_featured_image":false,"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[10],"tags":[6,9],"class_list":["post-232","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ux-design","tag-academic","tag-ux-design"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ti\u00eau chu\u1ea9n v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m: M\u1ed9t h\u01b0\u1edbng d\u1eabn \ud83c\udfa8<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1c ti\u00eau chu\u1ea9n thi\u1ebft y\u1ebfu v\u1ec1 t\u00ednh kh\u1ea3 d\u1ee5ng d\u00e0nh cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf UX. 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