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| <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
#i1{
width: 180px;
height: 30px;
padding-left: 10px;
outline: none;
border:1px solid lightgray;
border-radius: 6px;
}
#i1:focus{
border-color: skyblue;
}
.one{
width: 300px;
height: 120px;
background-color: skyblue;
display: none;
}
#i1:focus+.one{
display: block;
}
</style>
</head>
<body>
<input type="text" id="i1" placeholder="请输入账号"/>
<div class="one">
这是弹框
</div>
<h1>大标题 测试</h1>
</body>
</html>
|
