.progress_bar{
	position:relative;
	height:2em;
	border:1px solid #ccc;
	line-height:24px;
	background:#ff0000;
}
.progress_bar span{
	position:absolute;
	top:0;
	left:0;
	right:0;
	bottom:0;
	text-align:center;
}
.progress_bar_value{
	background:#fff;
}