在页面中间水平和垂直居中div，页眉和页脚粘在页面的顶部和底部

Question

I'm trying to make a page where I have a fixed height header and footer. The header is at the top of the screen (100% width) and the footer is at the bottom (100% width). I want to center a div with variable height content in the space between the header and footer. In the below jsfiddle, it works if the content is shorter than the space, but if the content gets too long, it goes past the footer, and over the header. It also doesn't work at all in IE (surprise, surprise).

Example: http://jsfiddle.net/VrfAU/4/

Edit: I've made some images to try and make this more clear.

Small content

Large Content

Answer 1

I ended up starting over and trying a different approach. The working solution is found in the new jsfiddle below. The idea was to separate the header and footer from the content area so that they would sit on top and bottom. Then it became much easier to center the content area in the space between those (with some hacks for older versions of IE).

http://jsfiddle.net/UYpnC/5/

Answer 2

Try something like this:

.main { min-height: 500px }

http://jsfiddle.net/VrfAU/8/

Answer 3

I used the css property z-index, which controls the stack order to fix this: I also used position: fixed to fix the header and footer:

I put

        #header {
background: black;
width: 100%;
height: 66px;
position:fixed;
overflow: hidden;
z-index: 20;}


.main_wrap {
    display: table;
    width: 100%;
    height: 100%;
    margin-top: -88px;
    vertical-align: middle;
    position: relative;
    z-index: -1;
}
#footer {
background: black;
width: 100%;
position: relative;
font-size: 85%;
color: #d0d6e0;
margin-top: -22px;
position: fixed;}