<!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>
h1{
color: red;
/* text-indent: 50px; *//* text-align:center 水平居中 */
/* line-height: 50px; 行高，大小和高度一致就可以实现垂直居中*/
height: 100px;
line-height: 100px;
text-align:center;
background-color: yellow;
}
a{color: red;
text-decoration: none;/* none链接去下划线*//* text-decoration: overline文字上面的线 line-through;一般用于任务列表 */
}
</style>
</head>
<body>
<h1>
欢迎欢迎
</h1>
<a href="">欢迎欢迎</a>
<ul>
<li>任务1</li>
<li style="text-decoration: line-through;">任务2</li><!-- 行内样式 -->
<li>任务3</li>
</ul>
</body>
</html>
