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| <!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
<style>
button {
margin: 10px;
}
div {
width: 200px;
height: 200px;
background-color: pink;
}
.show {
display: block;
}
.hide {
display: none;
}
</style>
</head>
<body>
<button id="btn">隐藏</button>
<div>
生命壹号
</div>
<script>
|