relative and absolute positioning in IE and FF
I want to have a div that grows when you add more content in it, has at least the height of the viewport and has a header and a footer sticking to the top and bottom. I came up with the following which works fine in IE7 but doesn't work in ff3.5.
This is the HTML (add repeated 'Lots of text
' for main_body to grow out of the viewpor开发者_运维技巧t):<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1" http-equiv="content-type">
<title>Testing 123</title>
<link rel="stylesheet" href="css/testing.css">
</head>
<body>
<div id="main_body">
<div id="header"></div>
<div id="content">
Lots of text<br>
</div>
<div id="footer"></div>
</div>
</body>
<html>
This is the css:
* {
margin: 0px 0px 0px 0px;
padding: 0px 0px 0px 0px;
border: none;
z-index: 10;
font-family: Arial;
font-size: 20px;
text-decoration: none;
text-align: left;
}
html, body {
height: 100%;
background-color: rgb(255, 255, 255);
}
#main_body {
position: relative;
min-height: 100%;
height: auto !important;
height: 100%;
margin: 0px 20px 0px 20px;
}
#header {
position: absolute;
top: 20px;
left: 0px;
height: 50px;
width: 100%;
background-color: rgb(40, 40, 40);
}
#content {
margin: 80px 10px 50px 10px;
}
#footer {
position: absolute;
bottom: 20px;
left: 0px;
height: 20px;
width: 100%;
background-color: rgb(40, 40, 40);
}
I think this should work according to specs. And it does in IE but not in ff3.5. Pleae help.
EDIT: I found out (thanks to Jeepstone) that it works fine when I change margin to padding in #content.
100% height is not straight forward. You need to do something like http://www.xs4all.nl/~peterned/examples/csslayout1.html.
Incidentally, where you are resetting *, you should look at Eric Meyers CSS Reset http://meyerweb.com/eric/tools/css/reset/ as resetting everything can cause problems.
In fact it doesn't work for me in IE8, FF3.5 and Webkit browsers and Opera.
I can't recall the actual reason but if you add a something e.g. after the "main_body" div, it works.
<div id="main_body">
It works for me in FF 3.5.7. You can try to set the positioning from relative to static as well, which might solve it. Let me know!
加载中,请稍侯......
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