Welcome to Css!

8.10 轮廓及样式重置

<!DOCTYPE html>

<html lang="en">

<head>

<meta charset="UTF-8">

<title>css</title>

<style type="text/css">

div{

width:300px;height:100px;line-height:100px;background:#E1EFFF;text-align:center;

border:2px red solid; border-radius:10px;

box-shadow:20px 20px gray;

outline:10px solid green;

}

input,textarea{outline:none}

</style>

</head>

<body>

<div>我要好好学习</div>

<br>

<input type="text">

<br>

<br>

<textarea name="" id="" cols="30" rows="10"></textarea>

</body>

</html>

如果不加outline:none则在网页面上点选时,会有一个粗蓝的方框,

返回值: