Div background to continue across full width of screen

Question

I'm trying to work out how to make the background colour / images of the various divs in my web pages, continue to the full width of the screen. An example of what I am trying to achieve is http://www.youknowwhodesign.com/ where Sarah Parmenter continues the blocks of colours horizontally across the screen.
Apologies if this is covered elsewhere in the forum, but I don't know the correct terminology for what I am trying to do and therefore have not been able to find any helpful discussions.

Answer 1

I did not look at the source code for the page you mention, they may do it another way, however you could create multiple wrapper divs and nest  the content divs, like so
.wrapper     {
     width:100%;
     clear:both;
     overflow:hidden;
     background-image:url(yourimage.ext);
     background-repeat: repeat-x;
.content     {
     width:950px;
     margin:0px auto;
Then;
<div class="wrapper">
<div class="content">Rinse and repeat as required.</div>
</div>
Gary