Transitioning from flash web design to html/css so go easy on me its probably something stupid.
Can't find an answer on w3schools or google so i come here for your words of wisdom.

html
HTML Code:
<div class="stretch"> </div>
css
HTML Code:
.stretch
{
	top:0px;
	left:0px;
	background-color:#123456;
	
	width:100%;
}
The div only shows when there is text in it, is there a way to just have a coloured box ?