html运行实例（css_pseudo-class_hover

代码示例：（标识：css_pseudo-class_hover_div）

<!DOCTYPE html>
<html>
<head>
<style>
div {
  background-color: green;
  color: white;
  padding: 25px;
  text-align: center;
}

div:hover {
  background-color: blue;
}
</style>
</head>
<body>

<p>请把鼠标移到下面的 div 元素上来改变其背景色：</p>

<div>把鼠标移到我上面</div>

</body>
</html>