.overlay {
	position: absolute;
    top: 0;
    left: 0;
    background: rgba(0, 0, 0, 0.5);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000,endColorstr=#99000000);
    height: 100%;
    display: block;
    width: 100%;
    z-index: 1;
}