Im working with a XHTML 1.0 Transitional doctype html file, and I want to have a main div with 800px width and make it appears centered (not the div content, but the div itself).
I've used this on the past:
<!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">
<head>
<title></title>
<style>
<!--
html, body { margin:0; padding:0; }
#main-container { background:black; width:800px; }
-->
</style>
</head>
<body>
<center>
<div id="main-container">
Content
</div>
</center>
</body>
</html>
But I am not sure if this is cr开发者_Python百科oss-browser compatible, or if its valid xhtml.
The center tag is deprecated since 1998. You need to apply CSS margin 0 auto; on the div. This will set top and bottom margin to 0 and left and right margin to auto which will let the div "auto-center" itself when its width is known/fixed.
See also:
- Center a div in CSS, (
text-alignis not the answer)
remove the center tags, and set this css declaration
#main-container { margin: auto; width:800px }
You can use
#container{
position:relative;
margin: auto;
}or, if you have a fixed width for your container, lets say 800px you can do something like
#container{
position:relative;
left: -400px;
margin-left: 50%;
}Use margin: 0 auto;, as stated above:
<style type="text/css">
html, body {
margin: 0;
padding: 0;
}
#main-container {
background: black;
width: 800px;
margin: 0 auto;
}
</style>
And by the way, if you wish to validate as proper XHTML, you need to add type="text/css" to your style elements. In addition, there is almost no need to hide your CSS from old browsers, because almost all browsers nowadays supports CSS.
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