.progressbar-container { position: relative; }
.progressbar-container > .progressbar {
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 5px;
	background-color: #ccc;
}
.csstransitions .progressbar-container > .progressbar {
	-webkit-transition: width 500ms;
	   -moz-transition: width 500ms;
	     -o-transition: width 500ms;
	        transition: width 500ms;
}
.progressbar-container > .progressbar.finish {
	opacity: 0;
}
.csstransitions .progressbar-container > .progressbar.finish {
	-webkit-transition: opacity 500ms 500ms;
	   -moz-transition: opacity 500ms 500ms;
	     -o-transition: opacity 500ms 500ms;
	        transition: opacity 500ms 500ms;
}