CODEWITHSUNDEEP
htmlcss
yuli chika
yuli chika

Reputation: 9221

How do I clear my floats?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US">
<head>
<style type="text/css">
body {width:100%;overflow-x:hidden;}
*{margin:0; padding:0; border:0;}
.wrap{float:left;width:100%;background-color:#ccc;}
.content{width:1000px;margin:0 auto;background-color:#efefef;}
.left{float:left;width:760px;}
.right{float:left;width:240px;}
</style>
</head>
<body>
<div class="wrap">
    <div class="content">
        <div class="left">
            111<br />
            222<br />
            <!-- there still have some lines -->
        </div>
        <div class="right">         
        </div>
    </div>
</div>
</body>
</html>

The DIV height is zero, the background color has disappeared. Even if I give DIV.content height auto or 100%. Why is the background color gone?

Upvotes: 1

Views: 132

Answers (4)

Sander Marechal
Sander Marechal

Reputation: 23216

Floating elements are "removed" from their parent, layout-wise. So your content div is empty and gets a height of 0. See this css-discuss article for the causes and fixes.

Upvotes: 1

Kyle
Kyle

Reputation: 67194

With XHTML the div has to have content or it will not be registered as "there." To force it to display using XHTML, type &nbsp; in the div you wish to display.

Upvotes: 0

Sotiris
Sotiris

Reputation: 40066

add overflow:auto for .content to clear the floats

example: http://jsbin.com/onedi3

More information for clearing you can find at http://www.quirksmode.org/css/clearing.html

Upvotes: 1

user527892
user527892

Reputation:

Adding overflow: hidden; to your .content {} will sort this out. It's a float clearing thing. Adding overflow or a clearing element will make the wrapper contain what's inside.

Upvotes: 1

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