我是编码和CSS的新手。我已经整理了一个页面，但不确定我是否可能过度使用div标签，如果它会影响页面的性能，以及我是否应该将float清除为自己的div标签，例如
#content {
clear: both;
}
我已将整个代码包含在下面
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="Content-Language" content="en-us" />
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta name="author" content="" />
<title>Example</title>
<base href="" />
<link rel="icon" type="image/png" href="" />
<link rel="stylesheet" type="text/css" href="" />
<style type="text/css" media="all">
* {
margin: 0;
padding: 0;
}
body {
font-family: arial, verdana, sans-serif;
font-size: 0.8em;
}
#wrapper {
/* background-image: url('images/bg-inner-page.gif'); */
background-color: #808080;
height: 200px;
}
#innerwrapper {
width: 960px;
overflow: auto;
}
#header {
}
#logo {
float: left;
margin-top: 20px;
margin-left: 50px;
background-color: gray;
}
#topnav {
float: left;
margin-top: 50px;
margin-left:30px;
color: #ffffff;
}
#topnav ul {
word-spacing: 10px;
}
#topnav ul li {
list-style-type: none;
display: inline;
}
#content {
clear: both;
}
#innercontent {
float: left;
margin-top: 100px;
margin-left: 225px;
margin-bottom: 20px;
width: 400px;
}
#rightcol {
float: left;
margin-top: 125px;
margin-left: 50px;
width: 200px;
}
#footer {
background-color: gray;
}
</style>
</head>
<body>
<div id="wrapper">
<div id="innerwrapper">
<div id="header">
<div id="logo"><img src="images/logo.gif" width="150" height="96" alt="logo" /></div>
<div id="topnav">
<ul>
<li>home</li>
<li>about</li>
<li>browse</li>
<li>faq</li>
<li>contact</li>
</ul>
</div>
</div>
<div id="content">
<div id="innercontent">
Lorem ipsum dolor sit amet, at elementum neque vestibulum sollicitudin semper neque, vitae metus. Nibh ligula mi. Faucibus rutrum elit turpis, nec congue quam ipsum felis neque et, wisi amet, architecto eros congue. Maecenas suspendisse tellus arcu eget pharetra, rhoncus aenean sapien morbi nec arcu, vivamus aliquet lorem amet at, vestibulum purus sociis varius id. Imperdiet id magnis turpis beatae aliquet, vestibulum dolor nec eget eu cras lobortis, vel rerum, risus sed et, libero et non eros commodo. Taciti eu leo sollicitudin malesuada, nibh duis amet aenean, odio aptent ultrices. Tristique morbi nunc ullamcorper ut curabitur. Et a in ut sem varius, sem rutrum vehicula sem sed, at diam amet erat vel. Et sit in ante felis vitae sit.
Quam eget sed elit natoque velit, enim mauris mauris urna, integer amet tellus illo ipsum, dolor fermentum cursus enim mollis tristique porttitor. Non dignissim. Sit ligula leo tincidunt, justo ut ut placerat quisque non, risus nonummy. Ultrices mauris congue aliquam aliquam felis, at placerat, amet vestibulum dictumst pellentesque iaculis risus. Sem sed impedit nullam ultrices lorem aliquam, nulla tellus consequatur in ornare magna. Viverra amet pede in in ornare eu, id arcu. Justo mus suspendisse praesent et, amet mattis convallis ullamcorper felis, fermentum nibh at ac, ullamcorper ipsum auctor et maecenas, aliquam molestiae in qui. Massa elit suspendisse penatibus molestie libero dolor, non leo vitae, sollicitudin a, platea tristique iaculis, tortor augue non est. Ante rutrum quis pellentesque lacinia convallis non, vestibulum nibh nunc luctus nibh a, in amet, iaculis dui ornare pede laoreet eu. Cursus integer vehicula quis, justo eget purus mattis donec vestibulum nunc, nunc vel eros lectus.
</div>
</div>
<div id="rightcol"><img src="http://htmldog.com/r/logo.gif" width="140" height="91" alt="html" /></div>
</div>
<div id="footer">footer</div>
<div>
</body>
</html>
答案 0 :(得分：3)
不要担心由于很多div而导致的性能问题。除非你使用数百个div（例如在某些浏览器上模拟圆形边框），否则网页的瓶颈就是并且将是无关的。
答案 1 :(得分：2)
完全没有。
即相对而言，少量的div。
目前，浏览器渲染性能非常令人印象深刻，因此主要的瓶颈将是下载页面的Internet连接速度。
您可以越小，下载和渲染页面的速度就越快。