2_兼容性.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.box{
				width: 400px;
				border: 1px solid black;
				overflow:hidden;
			}
			.left{
				float: left;
				background-color: red;
			}
			.right{
				float: right;
				background-color: blue;
			}
			h2{
				float: left;
				margin: 0;
				height: 30px;
			}
		</style>
		<!--
			解决方案：float: left;
		-->
	</head>
	<body>
		<div class="box">
			<div class="left">
				<h2>左边</h2>
			</div>
			<div class="right">
				<h2>右边</h2>
			</div>
		</div>
	</body>
</html>