Title
语文
用户名
数学
英语
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.c1[n=alex]{
width: 100px;height: 200px;
font-size: 5px;}
div span{
width: 100px;height: 100px;
font-size: 20px;
}
.c1 div{
width: 100px;height: 100px;
font-size: 30px;
}
</style>
</head>
<body>
<div class="c1"> 语文
<label for="usename" class="c1">用户名</label>
<input id="usename" type="text" n="alex"/>
</div>
<div class = 'c1' n="alex">用户名</div>
<div>
<span>数学</span>
</div>
<div class="c1">
<div>英语</div>
</div>
</body>
</html>