css盒子模型大详解

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	<style type="text/css">
		*{padding: 0px;margin: 0px;}
		span,a,b,strong
		{
			display: inline-block;
			width: 100px;
			height:100px;
			border: 6px solid red;
			padding: 20px;
			margin: 20px;
		}
	</style>
</head>
<body>
<span>我是span</span>
<a href="#">我是超链接</a>
<b>我是加粗</b>
<strong>我是强调</strong>
</body>
</html>