<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>