day42 一个极简动画效果（复习相关属性)

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<!DOCTYPE html>
<html><head><title>动画页面</title><style>body {font-family: Arial, sans-serif;background-color: #f2f2f2;margin: 0;padding: 0;}.container {max-width: 800px;margin: 0 auto;margin-top: 100px;padding: 20px;background-color: #fff;box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);text-align: center;}h1 {color: black;margin-top: 0;}.animated-element {font-size: 24px;color: green;opacity: 0;transform: translateX(-100%);animation: slide-in 1s ease-out forwards;}@keyframes slide-in {0% {opacity: 0;transform: translateX(-100%);}100% {opacity: 1;transform: translateX(0);}}.button {display: inline-block;padding: 10px 20px;margin-top: 20px;background-color: plum;color: #fff;text-decoration: none;border-radius: 4px;border: 0px;}.button:hover {background-color: purple;}</style>
</head><body><div class="container"><h1>动画页面</h1><div class="animated-element">这是一个带有动画效果的元素。</div><button class="button" onclick="animateElement()">触发动画</button></div><script>function animateElement() {var animatedElement = document.querySelector('.animated-element');animatedElement.style.animation = 'none'; // 先将动画重置为初始状态void animatedElement.offsetWidth; // 强制浏览器重新计算布局animatedElement.style.animation = 'slide-in 1s ease-out forwards'; // 再重新播放动画}</script>
</body></html>