Question

It seems like CSS – only technique #2 mentioned on: http://css-tricks.com/perfect-full-page-background-image/ but, it’s not. There is slight change in the code (wrt to height & display properties)

I tried copy pasting their html css but, I can’t get it to work. Is there may be some javascript involved ?

Answer 1

its just CSS no JavaScript WORKING DEMO

CSS

.front-bg {
position: fixed;
width: 200%;
height: 200%;
left: -50%;
background: black;
}

.front-bg img {
display: block;
margin: auto;
min-width: 50%;
min-height: 50%;
top: 0;
left: 0;
right: 0;
bottom: 0;
}

HTML

<div class="front-bg"><image src="http://a0.twimg.com/a/1349296073/t1/img/front_page/[e-mail]" /></div>