CSS font-weight 属性动画-在线运行代码案例-大卫编程网

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS font-weight 属性动画示例- 基础教程(div.cn)</title>
<style>
.animated {
    font-size: 32px;
    -webkit-animation: test 4s infinite; /* Chrome, Safari, Opera */
    animation: test 4s infinite;
}
/* Chrome, Safari, Opera */
@-webkit-keyframes test {
    50% {font-weight: bold;}
}
/* Standard syntax */
@keyframes test {
    50% {font-weight: bold;}
}
</style>
</head>
<body>
    <p> <strong>警告：</strong>：CSS动画在Internet Explorer 9和更早版本中不起作用。</p>
​
<p> <strong>注意</strong>：下一段的font-weight属性从其初始值“ normal”变为“ bold”，然后再次回到初始值“ normal”，直至无限次。 </p>
    <p class="animated">This is an animated paragraph.</p>
</body>
</html>