{"id":102495,"date":"2026-09-08T22:26:09","date_gmt":"2026-09-08T14:26:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/102495.html"},"modified":"2026-09-08T22:26:09","modified_gmt":"2026-09-08T14:26:09","slug":"day-21-animation-%e4%b8%8e-keyframes%e6%8a%8a%e5%8a%a8%e7%94%bb%e4%bb%8e-a-%e5%88%b0-b-%e5%8f%98%e6%88%90%e5%a4%9a%e7%82%b9%e7%bc%96%e6%8e%92","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/102495.html","title":{"rendered":"Day 21 | animation \u4e0e keyframes:\u628a\u52a8\u753b\u4ece A \u5230 B \u53d8\u6210\u591a\u70b9\u7f16\u6392"},"content":{"rendered":"<h2>Day 21 | animation \u4e0e keyframes:\u628a\u52a8\u753b\u4ece A \u5230 B \u53d8\u6210\u591a\u70b9\u7f16\u6392<\/h2>\n<p>\u672c\u6587\u662f\u300a30\u5929\u7cbe\u901aCSS\u300b\u4e13\u680f\u7b2c 21 \u7bc7,\u8ba2\u9605\u4e13\u680f\u4e0d\u8ff7\u8def\u3002<\/p>\n<p>\u6458\u8981:\u672c\u6587\u57fa\u4e8e CSS Animations Level 1 \u73b0\u884c\u89c4\u8303,\u7528\u4e00\u4e2a\u52a0\u8f7d\u6307\u793a\u5668\u628a &#064;keyframes \u7684\u5b8c\u6574\u5fc3\u667a\u8bb2\u6e05\u3002transition \u53ea\u80fd\u4ece\u4e00\u4e2a\u72b6\u6001\u8865\u5230\u53e6\u4e00\u4e2a\u72b6\u6001,\u800c keyframes \u80fd\u5728\u4efb\u610f\u591a\u4e2a\u65f6\u95f4\u70b9\u4e4b\u95f4\u7f16\u6392\u2014\u2014\u52a0\u8f7d\u6307\u793a\u5668\u3001\u5165\u573a\u5e8f\u5217\u3001\u5faa\u73af\u547c\u5438\u5168\u9760\u5b83\u3002\u4eca\u5929\u6309\u56db\u7248\u9012\u8fdb:\u6700\u7b80\u6de1\u5165 \u2192 \u591a\u5e27\u4f4d\u79fb\u52a8\u753b \u2192 \u516d\u4e2a\u52a8\u753b\u5c5e\u6027\u4e00\u6b21\u5230\u4f4d \u2192 \u548c transition \u5212\u6e05\u5206\u5de5\u3002\u65b0\u624b\u6700\u5bb9\u6613\u8e29\u7684\u662f\u5fd8\u5199 animation-fill-mode,\u52a8\u753b\u4e00\u7ed3\u675f\u5143\u7d20\u7acb\u523b\u5f39\u56de\u539f\u4f4d,\u524d\u9762\u767d\u6f14\u3002\u8bfb\u5b8c\u4f60\u4f1a\u5e26\u8d70\u4e00\u4e2a\u80fd\u5faa\u73af\u7684\u52a0\u8f7d\u6307\u793a\u5668 GIF\u3001\u4e00\u6761\u5173\u952e\u5e27\u5b9a\u683c\u80f6\u7247,\u4ee5\u53ca\u4e00\u4efd&#034;\u8be5\u7528 animation \u8fd8\u662f transition&#034;\u7684\u5224\u65ad\u8868\u3002\u8fd9\u4e2a\u6a21\u578b\u4ece Animations Level 1 \u5b9a\u7a3f\u8d77\u957f\u671f\u6709\u6548\u3002<\/p>\n<p>\u672c\u6587\u76ee\u5f55<\/p>\n<ul>\n<li>\n<p>\u5148\u6446\u73b0\u8c61:\u4e00\u4e2a\u4f1a\u81ea\u5df1\u8f6c\u7684\u52a0\u8f7d\u5708<\/p>\n<\/li>\n<li>\n<p>\u4e24\u7248\u9012\u8fdb:\u4ece\u6700\u7b80\u6de1\u5165\u5230\u591a\u5e27\u5165\u573a<\/p>\n<\/li>\n<li>\n<p>\u516d\u5c5e\u6027\u4e00\u6b21\u5230\u4f4d:\u4ece\u4f1a\u52a8\u5230\u542c\u8bdd<\/p>\n<\/li>\n<li>\n<p>\u4e00\u6bb5 GIF \u52a0\u4e00\u6761\u80f6\u7247:\u770b\u52a8\u753b\u771f\u6b63\u8dd1\u8d77\u6765<\/p>\n<\/li>\n<li>\n<p>animation \u548c transition,\u5230\u5e95\u8c01\u7ba1\u54ea\u4e00\u6bb5<\/p>\n<\/li>\n<li>\n<p>\u6700\u5bb9\u6613\u5fd8\u7684\u5751:\u52a8\u753b\u4e00\u505c,\u5143\u7d20\u5f39\u56de\u539f\u4f4d<\/p>\n<\/li>\n<li>\n<p>\u52a8\u624b\u6539\u4e00\u6539:duration\u3001forwards\u3001backwards \u4e09\u5904\u5fc5\u67e5<\/p>\n<\/li>\n<li>\n<p>\u660e\u5929\u89c1(Day 22):\u4e00\u4e2a\u5143\u7d20,\u540c\u65f6\u6f14\u597d\u51e0\u51fa<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142603-6aa01afb9055a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u5148\u6446\u73b0\u8c61:\u4e00\u4e2a\u4f1a\u81ea\u5df1\u8f6c\u7684\u52a0\u8f7d\u5708<\/h3>\n<p>\u5148\u7ed9\u7ed3\u679c:\u4e00\u4e2a\u4e0d\u505c\u65cb\u8f6c\u3001\u8fd8\u80fd\u547c\u5438\u53d8\u8272\u7684\u52a0\u8f7d\u5708\u3002\u8fd9\u662f animation \u7684\u4e3b\u573a\u2014\u2014\u4e0d\u7528\u4f60\u70b9\u3001\u4e0d\u7528\u4f60\u60ac\u505c,\u9875\u9762\u4e00\u5f00,\u5b83\u81ea\u5df1\u6309\u65f6\u95f4\u8f74\u5f80\u4e0b\u8d70,\u53ee,\u5f00\u673a\u5c31\u6f14,\u6f14\u5b8c\u8fd8\u80fd\u5faa\u73af\u3002<\/p>\n<p>\u4f46\u4eca\u5929\u771f\u6b63\u7684\u75db\u70b9,\u662f\u8bc4\u8bba\u533a\u51fa\u73b0\u9891\u7387\u6700\u9ad8\u7684\u4e00\u7c7b\u4e09\u8fde\u95ee:\u201c\u6211\u52a8\u753b\u660e\u660e\u5199\u4e86\u201d\u201c\u600e\u4e48\u4e00\u7ed3\u675f\u5c31\u5f39\u56de\u539f\u4f4d\u201d&#034;\u524d\u9762\u4e0d\u5c31\u767d\u6f14\u4e86?&#034;\u4e09\u8fde\u95ee,\u4e00\u4e2a\u75c5\u6839:animation-fill-mode \u6ca1\u5199\u3002\u8fd9\u7bc7\u5c31\u628a\u8fd9\u6761\u65f6\u95f4\u8f74\u8bb2\u6e05\u695a\u2014\u2014\u5173\u952e\u5e27\u600e\u4e48\u5199\u3001\u4e03\u4e2a\u65cb\u94ae\u5404\u7ba1\u4ec0\u4e48\u3001\u5b83\u548c transition \u5230\u5e95\u600e\u4e48\u5206\u5de5\u3002<\/p>\n<p>\u4e0a\u4e00\u7bc7 Day 20 \u7684\u7ffb\u5361,\u9760\u7684\u8fd8\u662f transition:\u201c\u4f60\u52a8\u6211\u4e00\u4e0b,\u6211\u624d\u8865\u4e00\u6bb5\u201d;\u4eca\u5929\u8981\u7684\u662f&#034;\u6211\u7ed9\u4e00\u6bb5\u5267\u672c,\u4f60\u81ea\u5df1\u6f14\u5b8c\u8fd8\u80fd\u5faa\u73af&#034;\u3002\u518d\u63d0\u9192\u4e00\u53e5,Day 17 \u90a3\u6761&#034;transition \u7f3a duration \u7b49\u4e8e\u4e0d\u52a8&#034;\u7684\u8001\u5751,animation \u8fd9\u8fb9\u6709\u4e2a\u540c\u6b3e\u53cc\u80de\u80ce:animation-duration \u4e0d\u5199,\u7167\u6837\u4e00\u52a8\u4e0d\u52a8,\u561b\u3002<\/p>\n<p>\u5148\u8bb0\u4f4f\u7c7b\u6bd4:transition \u50cf\u7535\u68af,\u53ea\u5728\u4e24\u4e2a\u697c\u5c42\u4e4b\u95f4\u8d70\u4e00\u8d9f;&#064;keyframes \u50cf\u4e00\u6bb5 GIF \u5267\u672c,\u5199\u597d\u4e86\u4ece\u7b2c 0 \u5e27\u5230\u7b2c 100 \u5e27\u6bcf\u4e00\u6b65\u957f\u4ec0\u4e48\u6837,\u6d4f\u89c8\u5668\u7167\u7740\u653e\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142604-6aa01afc508a9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e24\u7248\u9012\u8fdb:\u4ece\u6700\u7b80\u6de1\u5165\u5230\u591a\u5e27\u5165\u573a<\/h3>\n<h4>\u7b2c\u4e00\u7248:\u8ba9\u65b9\u5757\u6de1\u8fdb\u6765\u7684\u6700\u7b80 keyframes<\/h4>\n<p>\u6700\u5c0f\u53ef\u7528\u7684\u4e00\u6bb5\u52a8\u753b:\u5b9a\u4e49\u4e00\u4e2a &#064;keyframes,\u518d\u8ba9\u5143\u7d20 animation \u5f15\u7528\u5b83\u3002\u5148\u8dd1\u901a&#034;\u4f1a\u52a8&#034;,\u518d\u8c08&#034;\u6f14\u5f97\u597d&#034;\u3002<\/p>\n<p>&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;\u7b2c\u4e00\u7248:\u6700\u7b80\u6de1\u5165&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { max-width: 640px; margin: 60px auto; padding: 0 16px;<br \/>\n      font-family: &#034;Microsoft YaHei&#034;, sans-serif; background: #f6f4ee; color: #24292f; text-align: center; }<br \/>\n    \/* \u5267\u672c:\u53ea\u5199\u8d77\u70b9\u548c\u7ec8\u70b9\u4e24\u5e27,\u4e2d\u95f4\u7531\u6d4f\u89c8\u5668\u63d2\u503c *\/<br \/>\n    &#064;keyframes fade { from { opacity: 0; } to { opacity: 1; } }<br \/>\n    \/* animation \u81f3\u5c11\u8981\u6709\u540d\u5b57&#043;\u65f6\u957f\u4e24\u4e2a\u503c\u624d\u4f1a\u52a8 *\/<br \/>\n    .box { width: 160px; height: 160px; margin: 0 auto; border-radius: 16px;<br \/>\n      background: #2563eb; color: #fff; display: flex; align-items: center; justify-content: center;<br \/>\n      animation: fade 1.6s ease-out; }<br \/>\n    .note { font-size: 13px; color: #8a8a86; margin-top: 18px; }<br \/>\n  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;box&#034;&gt;\u6211\u6de1\u8fdb\u6765\u4e86&lt;\/div&gt;<br \/>\n  &lt;p class&#061;&#034;note&#034;&gt;\u5237\u65b0\u9875\u9762\u770b:\u65b9\u5757\u4ece\u900f\u660e\u8d70\u5230\u4e0d\u900f\u660e,\u4e00\u6b21\u8dd1\u5b8c\u5c31\u505c\u4f4f\u3002&lt;\/p&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142604-6aa01afcc5a1b.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142604-6aa01afcebbb4.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u73b0\u8c61\u5f88\u6e05\u695a:\u5237\u65b0\u65f6\u65b9\u5757\u4ece\u9690\u5f62\u6ed1\u5230\u53ef\u89c1,\u8dd1\u5230\u6700\u540e\u4e00\u5e27\u5c31\u505c\u5728\u7ec8\u70b9\u3002\u8fd9\u91cc\u6709\u4e2a\u5751\u7684\u4f0f\u7b14\u2014\u2014\u5b83\u4e4b\u6240\u4ee5\u505c\u5728\u7ec8\u70b9,\u662f\u56e0\u4e3a\u7ec8\u70b9\u503c\u6070\u597d\u7b49\u4e8e\u5143\u7d20\u672c\u6765\u7684\u6837\u5b50(opacity \u9ed8\u8ba4\u5c31\u662f 1)\u3002\u7b49\u4e0b\u4f60\u4f1a\u770b\u5230&#034;\u505c\u5728\u7ec8\u70b9&#034;\u5e76\u4e0d\u603b\u662f\u7406\u6240\u5f53\u7136\u3002<\/p>\n<h4>\u7b2c\u4e8c\u7248:\u591a\u5e27\u52a0\u4f4d\u79fb,\u628a\u5165\u573a\u6f14\u51fa\u6765<\/h4>\n<p>\u771f\u6b63\u8ba9 &#064;keyframes \u663e\u51fa\u4ef7\u503c\u7684,\u662f\u5173\u952e\u5e27\u4e0d\u6b62\u4e24\u5e27\u3002\u52a0\u4e0a transform \u505a\u4f4d\u79fb,\u5c31\u662f\u4e00\u4e2a\u6807\u51c6\u5165\u573a\u52a8\u753b\u3002<\/p>\n<p>&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;\u7b2c\u4e8c\u7248:\u591a\u5e27\u5165\u573a&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { max-width: 640px; margin: 50px auto; padding: 0 16px;<br \/>\n      font-family: &#034;Microsoft YaHei&#034;, sans-serif; background: #f6f4ee; color: #24292f; }<br \/>\n    \/* \u56db\u4e2a\u5173\u952e\u5e27:\u8fdb\u573a\u7565\u5e26\u56de\u5f39,\u4e2d\u95f4\u8fd8\u653e\u5927\u4e86\u4e00\u4e0b *\/<br \/>\n    &#064;keyframes rise {<br \/>\n      0%   { opacity: 0; transform: translateY(40px) scale(.9); }<br \/>\n      60%  { opacity: 1; transform: translateY(-8px) scale(1.02); }<br \/>\n      80%  { transform: translateY(3px) scale(.99); }<br \/>\n      100% { transform: translateY(0) scale(1); }<br \/>\n    }<br \/>\n    \/* \u4e09\u4e2a\u5361\u7247\u9519\u5cf0\u5165\u573a:\u9760 animation-delay \u62c9\u5f00\u65f6\u95f4\u5dee *\/<br \/>\n    .card { background: #fff; border-radius: 12px; padding: 16px; margin-bottom: 14px;<br \/>\n      font-size: 14px; box-shadow: 0 2px 8px rgba(31,45,61,.08);<br \/>\n      opacity: 0; animation: rise .7s ease-out forwards; }<br \/>\n    .c2 { animation-delay: .15s; }<br \/>\n    .c3 { animation-delay: .3s; }<br \/>\n    .note { font-size: 13px; color: #8a8a86; }<br \/>\n  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;card&#034;&gt;\u7b2c\u4e00\u6761:\u4e0a\u6d6e\u8fdb\u573a&lt;\/div&gt;<br \/>\n  &lt;div class&#061;&#034;card c2&#034;&gt;\u7b2c\u4e8c\u6761:\u665a 0.15 \u79d2\u51fa\u53d1&lt;\/div&gt;<br \/>\n  &lt;div class&#061;&#034;card c3&#034;&gt;\u7b2c\u4e09\u6761:\u518d\u665a 0.3 \u79d2&lt;\/div&gt;<br \/>\n  &lt;p class&#061;&#034;note&#034;&gt;\u5173\u952e\u5dee\u5f02:60% \/ 80% \u4e24\u5e27\u5236\u9020&#034;\u51b2\u8fc7\u5934\u518d\u843d\u56de&#034;\u7684\u56de\u5f39\u611f,\u8fd9\u662f\u4e24\u5e27\u7684 transition \u7ed9\u4e0d\u4e86\u7684\u3002&lt;\/p&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142605-6aa01afd41946.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142605-6aa01afd657fd.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u6ce8\u610f\u6211\u5728 .card \u4e0a\u5199\u4e86 animation-fill-mode: forwards\u2014\u2014\u8fd9\u662f\u523b\u610f\u7684\u3002\u5143\u7d20\u521d\u59cb opacity: 0,\u5982\u679c\u52a8\u753b\u7ed3\u675f\u540e\u4e0d forwards \u9501\u4f4f\u7ec8\u70b9,\u5b83\u4f1a\u77ac\u95f4\u95ea\u56de\u5168\u900f\u660e,\u4f60\u4f1a\u770b\u5230\u5361\u7247&#034;\u6f14\u5b8c\u5c31\u6d88\u5931&#034;\u3002\u8fd9\u4e2a\u5751,\u540e\u9762&#034;\u52a8\u753b\u4e00\u505c,\u5143\u7d20\u5f39\u56de\u539f\u4f4d&#034;\u90a3\u8282\u4e13\u95e8\u653e\u5927\u7ed9\u4f60\u770b\u3002<\/p>\n<h3>\u516d\u5c5e\u6027\u4e00\u6b21\u5230\u4f4d:\u4ece\u4f1a\u52a8\u5230\u542c\u8bdd<\/h3>\n<p>animation \u5176\u5b9e\u662f\u516d\u4ef6\u4e8b\u7684\u7b80\u5199\u3002\u628a\u5b83\u4eec\u62c6\u5f00\u6446\u597d,\u4f60\u5c31\u5b8c\u5168\u638c\u63e1\u4e86\u8282\u594f\u3002<\/p>\n<p>&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;\u516d\u5c5e\u6027\u62c6\u89e3&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { max-width: 720px; margin: 40px auto; padding: 0 16px;<br \/>\n      font-family: &#034;Microsoft YaHei&#034;, sans-serif; background: #f6f4ee; color: #24292f; }<br \/>\n    &#064;keyframes pulse { 0%,100% { transform: scale(1); background:#2563eb; }<br \/>\n      50% { transform: scale(1.25); background:#7c3aed; } }<br \/>\n    \/* \u5c55\u5f00\u5199\u5168\u516d\u4e2a\u5c5e\u6027,\u770b\u6e05\u6bcf\u4e2a\u7ba1\u4ec0\u4e48 *\/<br \/>\n    .dot { width: 88px; height: 88px; border-radius: 50%; color: #fff; margin: 0 auto;<br \/>\n      display: flex; align-items: center; justify-content: center; font-size: 13px;<br \/>\n      animation-name: pulse;<br \/>\n      animation-duration: 1.4s;      \/* \u65f6\u957f *\/<br \/>\n      animation-timing-function: ease-in-out; \/* \u8282\u594f *\/<br \/>\n      animation-delay: .3s;          \/* \u8d77\u8dd1\u5ef6\u8fdf *\/<br \/>\n      animation-iteration-count: infinite; \/* \u5faa\u73af\u6b21\u6570 *\/<br \/>\n      animation-direction: alternate; \/* \u5947\u5076\u8d9f\u53cd\u5411 *\/<br \/>\n      animation-fill-mode: both;     \/* \u8d77\u6b62\u4e24\u7aef\u7684\u586b\u5145 *\/<br \/>\n    }<br \/>\n    .note { font-size: 13px; color: #8a8a86; margin-top: 16px; text-align: center; }<br \/>\n  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;dot&#034;&gt;\u547c\u5438\u4e2d&lt;\/div&gt;<br \/>\n  &lt;p class&#061;&#034;note&#034;&gt;infinite \u8ba9\u5b83\u6c38\u4e0d\u505c;alternate \u8ba9\u5b83&#034;\u653e\u5927\u2192\u7f29\u56de\u2192\u653e\u5927&#034;\u6765\u56de\u6446,\u4e0d\u4f1a\u6bcf\u8d9f\u786c\u8df3\u8d77\u70b9\u3002&lt;\/p&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142605-6aa01afdbdca0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142605-6aa01afdef1cf.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h4>\u516d\u4e2a\u5c5e\u6027\u5206\u522b\u7ba1\u4ec0\u4e48<\/h4>\n<p>\u4e00\u53e5\u8bdd\u4e00\u4e2a:name \u9009\u5267\u672c\u3001duration \u5b9a\u591a\u957f\u3001timing-function \u5b9a\u5feb\u6162\u8282\u594f\u3001delay \u5b9a\u5ef6\u8fdf\u8d77\u8dd1\u3001iteration-count \u5b9a\u653e\u51e0\u904d\u3001direction \u5b9a\u8981\u4e0d\u8981\u5012\u653e\u3001fill-mode \u5b9a\u5934\u5c3e\u600e\u4e48\u586b\u5145(\u4e25\u683c\u8bf4\u662f\u7b2c\u4e03\u4e2a,\u5e38\u548c\u524d\u516d\u4e2a\u4e00\u8d77\u8bb0)\u3002\u7b80\u5199\u987a\u5e8f\u4e0d\u654f\u611f,\u4f46 duration \u7f3a\u4e86\u7b49\u4e8e 0\u3001\u52a8\u753b\u4e0d\u52a8,\u662f\u6700\u5e38\u89c1\u7684&#034;\u6211\u5199\u4e86\u600e\u4e48\u4e0d\u8dd1&#034;\u3002\u8fd9\u91cc\u8fd8\u85cf\u7740\u4e00\u4e2a\u65b0\u624b\u5bb9\u6613\u649e\u7684\u7ec4\u5408\u5751:delay \u52a0\u4e86\u3001\u5374\u6ca1\u914d fill-mode: backwards,\u90a3\u4e48\u5728\u7b49\u5f85\u7684\u90a3\u96f6\u70b9\u51e0\u79d2\u91cc,\u5143\u7d20\u4f1a\u5148\u9732\u51fa\u5b83&#034;\u672c\u8be5\u957f\u4ec0\u4e48\u6837&#034;\u7684\u6700\u7ec8\u6001,\u52a8\u753b\u4e00\u5f00\u59cb\u624d\u7a81\u7136\u95ea\u56de\u8d77\u70b9,\u8089\u773c\u770b\u5c31\u662f&#034;\u95ea\u4e00\u4e0b\u518d\u52a8&#034;\u3002\u6211\u81ea\u5df1\u5728\u505a\u9519\u5cf0\u5217\u8868\u5165\u573a\u65f6\u8e29\u8fc7\u4e00\u6b21\u2014\u2014\u4e09\u6761\u5361\u7247\u5404\u5ef6\u8fdf .15 \u79d2,\u7ed3\u679c\u5b83\u4eec\u5168\u90e8\u5148\u51fa\u73b0\u5728\u7ec8\u70b9\u4f4d\u7f6e\u3001\u518d\u5f39\u56de\u8d77\u70b9\u5f80\u4e0b\u6ed1,\u8bf4\u5b9e\u8bdd,\u7b2c\u4e00\u6b21\u89c1\u5230\u8fd9\u4e2a&#034;\u95ea\u4e00\u4e0b\u518d\u52a8&#034;,\u6211\u8fd8\u4ee5\u4e3a\u662f\u6d4f\u89c8\u5668\u5728\u9017\u6211,\u6123\u662f\u5237\u65b0\u4e86\u597d\u51e0\u904d\u624d\u770b\u6e05\u662f\u5ef6\u8fdf\u671f\u5728\u88f8\u5954\u3002\u540e\u6765\u7ed9\u5165\u573a\u52a8\u753b\u7edf\u4e00\u8865\u4e0a both \u624d\u5e72\u51c0\u3002\u6240\u4ee5\u8bb0\u4f4f:\u53ea\u8981\u52a8\u753b\u6709 delay,\u51e0\u4e4e\u90fd\u8981\u987a\u624b\u5199 backwards \u6216 both,\u628a\u8d77\u59cb\u5e27\u5728\u7b49\u5f85\u671f\u5c31\u5360\u4f4f\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142606-6aa01afe56511.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u4e00\u6bb5 GIF \u52a0\u4e00\u6761\u80f6\u7247:\u770b\u52a8\u753b\u771f\u6b63\u8dd1\u8d77\u6765<\/h3>\n<p>\u6587\u5b57\u8bf4\u4e0d\u6e05&#034;\u8f6c\u5f97\u987a\u4e0d\u987a&#034;,\u770b\u56fe\u5427\u2014\u2014\u4e0b\u9762\u8fd9\u6bb5\u5faa\u73af GIF \u662f\u7ecf\u5178\u52a0\u8f7d\u6307\u793a\u5668:\u4e00\u5708\u4e0d\u95ed\u5408\u7684\u5f27\u5728\u5300\u901f\u81ea\u8f6c\u3002<\/p>\n<p># &#064;frames 20<br \/>\n# &#064;size 360&#215;280<br \/>\n&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;\u52a0\u8f7d\u6307\u793a\u5668 GIF&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { margin: 0; height: 280px; display: flex; flex-direction: column; gap: 14px;<br \/>\n      align-items: center; justify-content: center;<br \/>\n      background: radial-gradient(circle at 50% 40%, #ffffff, #eceadf); font-family: &#034;Microsoft YaHei&#034;, sans-serif; }<br \/>\n    \/* \u4e3b\u5708:\u4e00\u6bb5\u4e0d\u95ed\u5408\u7684\u5f27,\u9760 rotate \u5300\u901f\u81ea\u8f6c *\/<br \/>\n    .ring { width: 84px; height: 84px; border-radius: 50%;<br \/>\n      border: 8px solid #dbe4ef; border-top-color: #2563eb; animation: spin 1s linear infinite; }<br \/>\n    \/* \u526f\u5708:\u53cd\u5411 &#043; \u547c\u5438,\u5c55\u793a\u540c\u9875\u591a\u4e2a animation \u4e0d\u6253\u67b6 *\/<br \/>\n    .ring2 { width: 40px; height: 40px; border-radius: 50%;<br \/>\n      border: 5px solid #dbe4ef; border-bottom-color: #2f8f4e; animation: spin 1.6s linear infinite reverse; }<br \/>\n    &#064;keyframes spin { to { transform: rotate(360deg); } }<br \/>\n    .lab { font-size: 13px; color: #6b6b66; }<br \/>\n  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;ring&#034;&gt;&lt;\/div&gt;<br \/>\n  &lt;div class&#061;&#034;ring2&#034;&gt;&lt;\/div&gt;<br \/>\n  &lt;div class&#061;&#034;lab&#034;&gt;\u52a0\u8f7d\u4e2d\u2026&lt;\/div&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142606-6aa01afec4230.gif\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u518d\u770b\u540c\u4e00\u6bb5\u81ea\u8f6c\u88ab\u5b9a\u683c\u6210\u56db\u4e2a\u8fdb\u5ea6\u70b9,\u8fd9\u5c31\u662f\u80f6\u7247\u6761\u7684\u4ef7\u503c\u2014\u2014\u6bcf\u4e00\u683c\u5e26\u767e\u5206\u6bd4\u548c\u65f6\u95f4\u6233,\u65b9\u4fbf\u4f60\u628a\u8f6c\u901f\u3001\u76f8\u4f4d\u6284\u4e0b\u6765\u6838\u5bf9\u3002<\/p>\n<p># &#064;frames 4<br \/>\n# &#064;target .ring<br \/>\n&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;\u52a0\u8f7d\u6307\u793a\u5668\u5b9a\u683c&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { max-width: 360px; margin: 40px auto; padding: 0 16px;<br \/>\n      font-family: &#034;Microsoft YaHei&#034;, sans-serif; background: #f6f4ee; color: #24292f; text-align: center; }<br \/>\n    \/* \u4e0e GIF \u540c\u6b3e:\u4e00\u6bb5\u5300\u901f\u81ea\u8f6c\u7684\u5f27,\u8fd9\u91cc\u8dd1\u4e00\u6b21\u65b9\u4fbf\u5b9a\u683c\u5230\u56fa\u5b9a\u76f8\u4f4d *\/<br \/>\n    .ring { width: 96px; height: 96px; border-radius: 50%; margin: 0 auto;<br \/>\n      border: 9px solid #dbe4ef; border-top-color: #2563eb; animation: spin 1.6s linear 1; }<br \/>\n    &#064;keyframes spin { from { transform: rotate(0); } to { transform: rotate(360deg); } }<br \/>\n    .note { font-size: 13px; color: #8a8a86; margin-top: 16px; }<br \/>\n  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;ring&#034;&gt;&lt;\/div&gt;<br \/>\n  &lt;p class&#061;&#034;note&#034;&gt;\u5b9a\u683c\u70b9\u7ea6 0% \/ 33% \/ 66% \/ \u6ee1\u683c \u5bf9\u5e94 0\u00b0 \/ 120\u00b0 \/ 240\u00b0 \/ 360\u00b0,\u9876\u90e8\u7f3a\u53e3\u4e00\u683c\u4e00\u683c\u8f6c\u56de\u6765&lt;\/p&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142606-6aa01afed8517.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u56db\u683c\u5bf9\u6bd4\u6570\u636e\u80fd\u9a8c\u8bc1&#034;\u662f\u4e0d\u662f\u5300\u901f&#034;:\u7f3a\u53e3\u4f9d\u6b21\u4ece\u9876\u90e8\u8f6c\u5230\u53f3\u4e0b\u3001\u8f6c\u5230\u5de6\u4e0b\u3001\u56de\u5230\u9876\u90e8,\u56db\u6bb5\u89d2\u5ea6\u5747\u5206,\u6ca1\u6709\u54ea\u4e00\u683c\u660e\u663e\u8df3\u4e00\u5927\u6b65\u3002\u82e5\u67d0\u4e24\u683c\u4e4b\u95f4\u7f3a\u53e3\u4f4d\u7f6e\u7a81\u53d8,\u591a\u534a\u662f timing-function \u4e0d\u662f linear \u6216\u5173\u952e\u5e27\u5206\u5e03\u4e0d\u5747\u3002<\/p>\n<p>\u8fd9\u91cc\u8865\u4e00\u6761\u8fb9\u754c\u4e0e\u4f53\u9a8c\u5e38\u8bc6:\u4e00\u4e2a infinite \u5faa\u73af\u7684\u52a0\u8f7d\u5708\u867d\u7136\u597d\u770b,\u5bf9\u524d\u5ead\u529f\u80fd\u654f\u611f\u6216\u8005\u5728\u7cfb\u7edf\u91cc\u52fe\u9009\u4e86&#034;\u51cf\u5c11\u52a8\u6001\u6548\u679c&#034;\u7684\u7528\u6237\u5462,\u5374\u771f\u4e0d\u592a\u53cb\u597d\u3002\u89c4\u8303\u505a\u6cd5\u662f\u7528 prefers-reduced-motion \u5a92\u4f53\u67e5\u8be2\u515c\u5e95\u2014\u2014\u68c0\u6d4b\u5230\u8fd9\u7c7b\u504f\u597d\u65f6,\u628a animation \u6362\u6210 none \u6216\u4e00\u6b21\u6027\u7684\u6de1\u5165,\u8ba9\u52a0\u8f7d\u5708\u505c\u5728\u67d0\u4e2a\u9759\u6001\u89d2\u5ea6,\u800c\u4e0d\u662f\u6c38\u8fdc\u8f6c\u4e0b\u53bb\u3002\u53e6\u5916\u65f6\u957f\u4e5f\u522b\u8d2a\u957f:\u4e00\u4e2a 1.2s \u5230 1.6s \u81ea\u8f6c\u7684\u5708\u770b\u7740\u6700\u8212\u670d,\u592a\u6162\u50cf\u5361\u4f4f\u4e86\u3001\u592a\u5feb\u663e\u5f97\u8e81;\u771f\u5230\u4e86\u5341\u51e0\u79d2\u4ee5\u4e0a\u7684\u52a0\u8f7d,\u8be5\u4e0a\u8fdb\u5ea6\u6761\u6216\u8005\u9aa8\u67b6\u5c4f\u5440,\u522b\u8ba9\u4e00\u4e2a\u5708\u5e72\u8f6c\u5230\u5929\u8352\u5730\u8001\u3002<\/p>\n<h3>animation \u548c transition,\u5230\u5e95\u8c01\u7ba1\u54ea\u4e00\u6bb5<\/h3>\n<h4>\u5206\u5de5\u7684\u4e00\u53e5\u8bdd\u7248<\/h4>\n<p>transition \u7531\u72b6\u6001\u53d8\u5316\u89e6\u53d1(hover\u3001\u52a0 class\u3001\u6539\u5c5e\u6027),\u6ca1\u6709\u53d8\u5316\u5b83\u5c31\u4e0d\u52a8,\u800c\u4e14\u53ea\u4f1a\u4ece A \u8865\u5230 B\u3002animation \u7531\u52a0\u8f7d\u5373\u81ea\u52a8\u64ad\u653e(\u6216 animation-play-state \u63a7\u5236),\u81ea\u5e26\u65f6\u95f4\u8f74,\u80fd\u4e00\u6b21\u7ecf\u8fc7\u591a\u4e2a\u5173\u952e\u5e27\u3002\u8fd8\u6709\u4e2a\u5e38\u88ab\u95ee\u5230\u7684\u5dee\u522b:transition \u4f60\u53ea\u8981\u628a\u72b6\u6001\u6765\u56de\u5207,\u5b83\u5c31\u81ea\u52a8\u6765\u56de\u8865,\u5929\u7136\u53ef\u9006;\u800c animation \u60f3\u91cd\u64ad\u4e00\u6b21,\u5f97\u5148\u628a\u5b83\u5f52\u96f6(\u6bd4\u5982\u5220\u4e86 class \u518d\u52a0\u56de\u3001\u6216\u9760 animation-play-state \u914d\u5408),\u5426\u5219\u5b83\u4f1a\u4ee5\u4e3a&#034;\u5df2\u7ecf\u8dd1\u5b8c\u4e86&#034;\u4e0d\u518d\u52a8\u3002\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48&#034;\u6309\u94ae\u70b9\u4e00\u4e0b\u6296\u4e00\u4e0b&#034;\u8fd9\u79cd\u4e00\u6b21\u6027\u53cd\u9988\u66f4\u9002\u5408 animation,\u800c&#034;\u60ac\u505c\u62ac\u8d77\u3001\u79bb\u5f00\u843d\u56de&#034;\u66f4\u9002\u5408 transition\u3002<\/p>\n<h4>\u4ec0\u4e48\u65f6\u5019\u7528\u54ea\u4e2a<\/h4>\n<p>\u4e0b\u9762\u628a\u4e24\u79cd\u5199\u6cd5\u653e\u540c\u4e00\u9875,\u5de6\u5361\u7528 transition \u505a\u60ac\u505c\u62ac\u5347,\u53f3\u5361\u7528 animation \u505a\u4e00\u6b21\u6027\u5165\u573a,\u5bf9\u7167\u7740\u8bb0\u6700\u7262\u3002<\/p>\n<p>&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;transition vs animation&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { max-width: 760px; margin: 40px auto; padding: 0 16px;<br \/>\n      font-family: &#034;Microsoft YaHei&#034;, sans-serif; background: #f6f4ee; color: #24292f; }<br \/>\n    .row { display: flex; gap: 20px; }<br \/>\n    .box { flex: 1; border-radius: 14px; padding: 22px; font-size: 14px; color: #fff; }<br \/>\n    \/* \u5de6:transition \u2014\u2014 \u53ea\u5728\u60ac\u505c\u7684\u77ac\u95f4\u4ece A \u8865\u5230 B,\u6765\u56de\u53ef\u9006 *\/<br \/>\n    .tr { background: #2563eb; transition: transform .3s ease, box-shadow .3s ease; }<br \/>\n    .tr:hover { transform: translateY(-10px); box-shadow: 0 14px 30px rgba(37,99,235,.35); }<br \/>\n    \/* \u53f3:animation \u2014\u2014 \u52a0\u8f7d\u5c31\u81ea\u52a8\u6f14\u4e00\u904d\u5165\u573a,\u53ef\u591a\u5e27\u3001\u53ef\u5faa\u73af *\/<br \/>\n    &#064;keyframes pop { 0% { opacity: 0; transform: scale(.7); } 70% { transform: scale(1.05); }<br \/>\n      100% { opacity: 1; transform: scale(1); } }<br \/>\n    .an { background: #2f8f4e; opacity: 0; animation: pop .8s ease-out forwards; }<br \/>\n    .cap { font-size: 13px; color: #8a8a86; margin-top: 12px; text-align: center; }<\/p>\n<p>  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;row&#034;&gt;<br \/>\n    &lt;div class&#061;&#034;box tr&#034;&gt;\u60ac\u505c\u6211:transition&lt;br&gt;\u53ef\u9006\u3001\u53ea\u8d70 A\u2192B&lt;\/div&gt;<br \/>\n    &lt;div class&#061;&#034;box an&#034;&gt;\u52a0\u8f7d\u5373\u5165\u573a:animation&lt;br&gt;\u81ea\u52a8\u64ad\u653e\u3001\u591a\u5e27&lt;\/div&gt;<br \/>\n  &lt;\/div&gt;<br \/>\n  &lt;p class&#061;&#034;cap&#034;&gt;\u540c\u4e00\u9875\u5e76\u5b58\u4e0d\u51b2\u7a81:\u4ea4\u4e92\u6001\u4ea4\u7ed9 transition,\u81ea\u987e\u81ea\u7684\u65f6\u95f4\u8f74\u4ea4\u7ed9 animation\u3002&lt;\/p&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142607-6aa01aff1192d.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142607-6aa01aff427bd.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u5224\u65ad\u89c4\u5219\u5f88\u7b80\u5355:\u8981\u8ddf\u7740\u7528\u6237\u64cd\u4f5c\u6765\u56de\u8d70\u7684,\u7528 transition;\u8981\u81ea\u5df1\u6309\u5267\u672c\u8d70\u4e00\u904d\u6216\u5faa\u73af\u7684,\u7528 animation\u3002 \u4e24\u8005\u53ef\u4ee5\u540c\u65f6\u6302\u5728\u4e00\u4e2a\u5143\u7d20\u4e0a\u2014\u2014\u60ac\u505c\u7f29\u653e\u7528 transition,\u6301\u7eed\u547c\u5438\u7528 animation,\u4e92\u4e0d\u5e72\u6270\u3002\u8fd9\u4e2a\u5206\u5de5\u662f\u957f\u671f\u6709\u6548\u7684\u901a\u7528\u5fc3\u667a\u3002<\/p>\n<table>\n<tr>\u5bf9\u6bd4\u7ef4\u5ea6transitionanimation<\/tr>\n<tbody>\n<tr>\n<td>\u89e6\u53d1\u65b9\u5f0f<\/td>\n<td>\u72b6\u6001\u53d8\u5316(hover \/ \u52a0 class)\u88ab\u52a8\u89e6\u53d1<\/td>\n<td>\u52a0\u8f7d\u5373\u81ea\u52a8\u64ad\u653e,\u6216\u88ab class \u89e6\u53d1<\/td>\n<\/tr>\n<tr>\n<td>\u5173\u952e\u5e27<\/td>\n<td>\u53ea\u6709\u8d77\u70b9\u548c\u7ec8\u70b9\u4e24\u6bb5<\/td>\n<td>\u4efb\u610f\u591a\u6bb5,\u53ef\u547d\u540d\u591a\u5e27<\/td>\n<\/tr>\n<tr>\n<td>\u5faa\u73af<\/td>\n<td>\u4e0d\u80fd\u5faa\u73af<\/td>\n<td>iteration-count \u53ef infinite<\/td>\n<\/tr>\n<tr>\n<td>\u5012\u653e<\/td>\n<td>\u624b\u52a8\u53bb\u6389 class \u624d\u56de\u9000<\/td>\n<td>direction: alternate \u539f\u751f\u652f\u6301<\/td>\n<\/tr>\n<tr>\n<td>\u9002\u5408\u4ec0\u4e48<\/td>\n<td>\u4ea4\u4e92\u53cd\u9988\u3001\u60ac\u505c\u6001<\/td>\n<td>\u5165\u573a\u3001\u52a0\u8f7d\u6307\u793a\u3001\u5e38\u9a7b\u547c\u5438<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u518d\u8865\u4e00\u6761\u65f6\u6548\u80cc\u666f:\u65e9\u5e74\u7ed9 SVG \u505a\u52a8\u753b\u5e38\u7528 SMIL \u7684 &lt;animate&gt; \u6807\u7b7e,\u5b83\u548c CSS \u5404\u5199\u4e00\u5957\u3001\u8026\u5408\u8fdb\u7ed3\u6784\u91cc,\u5982\u4eca\u5df2\u88ab CSS Animations \u53d6\u4ee3,\u65b0\u9879\u76ee\u76f4\u63a5\u5199 &#064;keyframes \u5c31\u591f\u4e86,\u4e0d\u5fc5\u518d\u5b66 SMIL\u3002\u7406\u89e3\u4e86\u8fd9\u4e2a\u8fb9\u754c,\u4f60\u5c31\u4e0d\u4f1a\u628a\u5165\u573a\u52a8\u753b\u8bef\u5199\u6210 transition(\u5b83\u4e0d\u4f1a\u5faa\u73af),\u4e5f\u4e0d\u4f1a\u62ff animation \u53bb\u505a\u672c\u8be5\u53ef\u9006\u7684\u60ac\u505c(\u5b83\u4e0d\u8ddf\u624b)\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142607-6aa01aff993eb.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h3>\u6700\u5bb9\u6613\u5fd8\u7684\u5751:\u52a8\u753b\u4e00\u505c,\u5143\u7d20\u5f39\u56de\u539f\u4f4d<\/h3>\n<p>\u8fd9\u662f\u65b0\u624b\u95ee\u5f97\u6700\u591a\u7684\u4e00\u7c7b&#034;\u6211\u52a8\u753b\u660e\u660e\u5199\u4e86,\u600e\u4e48\u7ed3\u675f\u5c31\u8df3\u56de\u53bb&#034;\u2014\u2014\u54c8,\u8fd9\u6761\u57fa\u672c\u662f\u8bc4\u8bba\u533a\u51fa\u73b0\u7387\u6700\u9ad8\u7684&#034;\u6f14\u5b8c\u5931\u5fc6\u75c7&#034;\u3002\u6839\u56e0\u662f\u7f3a\u4e86 animation-fill-mode\u3002\u4e0b\u9762\u628a\u4e24\u6761\u65f6\u957f\u76f8\u540c\u3001\u552f\u4e00\u5dee\u522b\u5c31\u662f fill-mode \u7684\u52a8\u753b\u5e76\u6392\u653e,\u622a\u56fe\u662f\u5728\u52a8\u753b\u8dd1\u5b8c\u4e4b\u540e\u62cd\u7684\u3002<\/p>\n<p>&lt;!&#8211; \u300a30\u5929\u7cbe\u901aCSS\u300bDay 21 \u00b7 \u5e73\u5934\u54e5 \u00b7 \u6280\u672f\u6539\u53d8\u4e16\u754c,\u52e4\u594b\u6539\u53d8\u4eba\u751f &#8211;&gt;<br \/>\n&lt;!DOCTYPE html&gt;<br \/>\n&lt;html lang&#061;&#034;zh-CN&#034;&gt;<br \/>\n&lt;head&gt;<br \/>\n  &lt;meta charset&#061;&#034;UTF-8&#034;&gt;<br \/>\n  &lt;title&gt;fill-mode \u7f3a\u5931:\u5f39\u56de\u539f\u4f4d&lt;\/title&gt;<br \/>\n  &lt;style&gt;<br \/>\n    * { box-sizing: border-box; }<br \/>\n    body { max-width: 760px; margin: 40px auto; padding: 0 16px;<br \/>\n      font-family: &#034;Microsoft YaHei&#034;, sans-serif; background: #f6f4ee; color: #24292f; }<br \/>\n    .bar { background: #fff3e0; border: 1px solid #e3e0d8; border-radius: 6px;<br \/>\n      padding: 8px 14px; font-size: 14px; color: #8a3a28; margin-bottom: 22px; }<br \/>\n    .row { display: flex; gap: 24px; justify-content: center; align-items: flex-start; height: 260px; }<br \/>\n    \/* \u57fa\u51c6\u6001\u5c31\u505c\u5728\u4e0b\u65b9 translateY(70px),\u52a8\u753b\u628a\u5b83\u62ac\u5230 0;\u4e24\u6761\u53ea\u5dee fill-mode *\/<br \/>\n    &#064;keyframes up { from { transform: translateY(70px); } to { transform: translateY(0); } }<br \/>\n    .box { width: 150px; height: 150px; border-radius: 14px; transform: translateY(70px);<br \/>\n      display: flex; align-items: center; justify-content: center; color: #fff; font-size: 13px; text-align: center; padding: 0 10px; }<br \/>\n    .good { background: #2f8f4e; animation: up .3s ease-out forwards; } \/* \u505c\u5728\u62ac\u8d77\u7684\u7ec8\u70b9 *\/<br \/>\n    .bad { background: #c0392b; animation: up .3s ease-out; } \/* \u7f3a fill-mode:\u8dd1\u5b8c\u6389\u56de\u57fa\u51c6\u4f4d *\/<br \/>\n    .note { font-size: 13px; color: #8a3a28; margin-top: 18px; text-align: center; }<br \/>\n  &lt;\/style&gt;<br \/>\n&lt;\/head&gt;<br \/>\n&lt;body&gt;<br \/>\n  &lt;div class&#061;&#034;bar&#034;&gt;0.3 \u79d2\u52a8\u753b\u8dd1\u5b8c\u4e4b\u540e\u518d\u622a\u56fe:\u5de6\u8fb9\u62ac\u5728\u7ec8\u70b9,\u53f3\u8fb9\u5df2\u6389\u56de 70px \u57fa\u51c6\u4f4d&lt;\/div&gt;<br \/>\n  &lt;div class&#061;&#034;row&#034;&gt;<br \/>\n    &lt;div class&#061;&#034;box good&#034;&gt;forwards:\u505c\u5728\u7ec8\u70b9,\u62ac\u7740&lt;\/div&gt;<br \/>\n    &lt;div class&#061;&#034;box bad&#034;&gt;\u65e0 fill-mode:\u6389\u56de\u57fa\u51c6&lt;\/div&gt;<br \/>\n  &lt;\/div&gt;<br \/>\n  &lt;p class&#061;&#034;note&#034;&gt;\u73b0\u8c61\u89e3\u91ca:\u4e24\u6761\u52a8\u753b\u8def\u5f84\u5b8c\u5168\u76f8\u540c,\u5dee\u522b\u53ea\u5728 fill-mode\u3002\u5143\u7d20\u57fa\u51c6\u6001\u662f translateY(70px),\u52a8\u753b\u53ea\u5728&#034;\u751f\u6548\u671f\u95f4&#034;\u8986\u76d6\u5b83,\u7ed3\u675f\u540e none \u4ea4\u56de\u57fa\u51c6\u3001forwards \u7559\u4f4f\u7ec8\u70b9,\u4e8e\u662f\u5de6\u8fb9\u9ad8\u53f3\u8fb9\u4f4e\u3002&lt;\/p&gt;<br \/>\n&lt;\/body&gt;<br \/>\n&lt;\/html&gt;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260908142608-6aa01b000e605.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u524d\u7f6e\u6761\u4ef6\u662f\u7406\u89e3&#034;\u52a8\u753b\u53ea\u5728 active \u9636\u6bb5\u62e5\u6709\u5143\u7d20&#034;\u3002animation-fill-mode \u5c31\u662f\u51b3\u5b9a\u52a8\u753b\u5f00\u59cb\u524d \/ \u7ed3\u675f\u540e\u8981\u4e0d\u8981\u628a\u5173\u952e\u5e27\u7684\u503c\u7559\u4f4f:forwards \u7559\u4f4f\u7ed3\u675f\u5e27(\u5165\u573a\u52a8\u753b\u5fc5\u5907),backwards \u5728\u5ef6\u8fdf\u671f\u5c31\u5360\u4f4f\u8d77\u59cb\u5e27(\u914d delay \u65f6\u9632\u95ea),both \u4e24\u5934\u90fd\u5360\u3002\u6ce8\u610f\u98ce\u9669:\u5982\u679c\u4f60\u7684\u5143\u7d20\u521d\u59cb\u6001\u672c\u6765\u5c31\u7b49\u4e8e\u52a8\u753b\u7ec8\u6001(\u6bd4\u5982 opacity \u9ed8\u8ba4 1\u3001\u4e14\u7ec8\u70b9\u4e5f\u662f 1),\u6f0f\u5199 fill-mode \u4f60\u6839\u672c\u770b\u4e0d\u51fa\u95ee\u9898;\u53ef\u4e00\u65e6\u521d\u59cb\u6001\u548c\u7ec8\u70b9\u6001\u4e0d\u540c(\u5e38\u89c1\u4e8e transform\u3001opacity: 0 \u8d77\u6b65),\u4e0d forwards \u5c31\u4f1a\u9732\u9985\u3002\u6392\u67e5\u52a8\u4f5c\u662f\u6253\u5f00 DevTools \u7684 Animations 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22):\u4e00\u4e2a\u5143\u7d20,\u540c\u65f6\u6f14\u597d\u51e0\u51fa<\/h3>\n<p>\u4eca\u5929\u7684\u52a0\u8f7d\u5708\u53ea\u8dd1\u4e86\u4e00\u6bb5\u52a8\u753b\u3002\u660e\u5929\u5f00\u59cb\u73a9\u7f16\u6392:\u9017\u53f7\u5e76\u5217,\u4e00\u4e2a\u5143\u7d20\u540c\u65f6\u6302\u65cb\u8f6c\u3001\u547c\u5438\u3001\u53d8\u8272\u597d\u51e0\u6bb5;\u518d\u62ff steps() \u628a\u5e73\u6ed1\u66f2\u7ebf\u5207\u6210\u4e00\u683c\u4e00\u683c,\u5409\u7965\u7269\u5c31\u80fd\u5494\u54d2\u5494\u54d2\u5f80\u524d\u8d70\u2014\u2014\u5267\u900f\u4e00\u4e2a\u5751:steps() \u7684\u5e27\u6570\u548c sprite \u6b65\u957f\u5bf9\u4e0d\u9f50,\u753b\u9762\u5f53\u573a\u8df3\u62bd\u6410,\u660e\u5929\u4e13\u95e8\u6392\u5b83,\u987a\u5e26\u628a will-change \u4ec0\u4e48\u65f6\u5019\u8be5\u53d1\u3001\u4ec0\u4e48\u65f6\u5019\u522b\u4e71\u53d1\u4e5f\u8bb2\u6389\u3002\u4eca\u665a\u5148\u628a fill-mode \u4e09\u4e2a\u503c\u73a9\u660e\u767d\u3002<\/p>\n<p>\u53c2\u8003\u8d44\u6599<\/p>\n<ul>\n<li>\n<p>MDN: &#064;keyframes<\/p>\n<\/li>\n<li>\n<p>MDN: animation-fill-mode<\/p>\n<\/li>\n<li>\n<p>W3C: CSS Animations Level 1<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n","protected":false},"excerpt":{"rendered":"<p>Day 21 | animation \u4e0e keyframes:\u628a\u52a8\u753b\u4ece A \u5230 B \u53d8\u6210\u591a\u70b9\u7f16\u6392 \u672c\u6587\u662f\u300a30\u5929\u7cbe\u901aCSS\u300b\u4e13\u680f\u7b2c 21 \u7bc7,\u8ba2\u9605\u4e13\u680f\u4e0d\u8ff7\u8def\u3002 \u6458\u8981:\u672c\u6587\u57fa\u4e8e CSS Animations Level 1 \u73b0\u884c\u89c4\u8303,\u7528\u4e00\u4e2a\u52a0\u8f7d\u6307\u793a\u5668\u628a keyframes \u7684\u5b8c\u6574\u5fc3\u667a\u8bb2\u6e05\u3002transition \u53ea\u80fd\u4ece\u4e00\u4e2a\u72b6\u6001\u8865\u5230\u53e6\u4e00\u4e2a\u72b6\u6001,\u800c keyframes 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