实际中理解div布局和浮动

<!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
</head>
<body>

<div id="container" style="500px">

<div id="header" style="background-color:#FFA500;">
<h1 style="margin-bottom:0;">主要的网页标题</h1></div>

<div id="menu" style="background-color:#FFD700;height:200px;100px;float:left;">
<b>菜单</b><br>
HTML<br>
CSS<br>
JavaScript</div>

<div id="content" style="background-color:#EEEEEE;height:200px;400px;float:left;">
内容在这里</div>

<div id="footer" style="background-color:#FFA500;clear:both;text-align:center;">
版权 © runoob.com</div>

</div>
</body>
</html>
原文地址:https://www.cnblogs.com/littlewriter/p/6106964.html