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<!DOCTYPE html> <html> <head> <style> div { width: 100px; height: 100px; background: red; position: relative; animation-name: example; animation-duration: 3s; animation-fill-mode: forwards; } @keyframes example { from {top: 0px;} to {top: 200px; background-color: blue;} } </style> </head> <body> <p>让 div 元素在动画结束时保留最后一个关键帧的样式值：</p> <div></div> <p><strong>注意：</strong> animation-fill-mode 属性在 Internet Explorer 9 及更早版本中不受支持。</p> </body> </html>