<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div{
text-decoration: overline;
width: 200px;
background-color: blue;
text-align: center;
line-height: 200px;
}
p{
text-indent: 2em;
color: yellow;
}
section{
text-transform: capitalize;
text-shadow:-5px -5px 1px red;
}
</style>
</head>
<body>
<section>hello css</section>
<div>我是一个div</div>
<p>
段落标签段落标签段落标签段落标签段落标签段落标签<br>
段落标签段落标签段落标签段落标签段落标签段落标签
</p>
</body>
</html>