overlay {
    /*position: fixed;*/ /* Sit on top of the page content */
    /*display: block;*/ /* Hidden by default */
    /*width: 100%;*/ /* Full width (cover the whole page) */
    /*height: 100%;*/ /* Full height (cover the whole page) */
    /*top: 0;
    left: 0;
    right: 0;
    bottom: 0;*/
    background-color: rgba(0,0,0,0.5); /* Black background with opacity */
    /*z-index: 2;*/ /* Specify a stack order in case you're using a different order for other elements */
    /*cursor: pointer;*/ /* Add a pointer on hover */
}