#stacks_in_3 .overlay {
    position: absolute;
    width: 
                
                1000px
            ;
    height: 
                auto
                ;
            ;
    left: 0;
    top: 0;
    pointer-events: none;
    
	background-image: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" height="8" width="8"><g transform="translate(0,-972.36218)"><path fill="#FFFFFF" d="m0,972.36c4.4183,0,8,3.5817,8,8v-8h-8z"/></g></svg>'),
        url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" height="8" width="8"><g transform="translate(0,-972.36218)"><path fill="#FFFFFF" d="m0,980.36c0-4.4183,3.5817-8,8-8h-8v8z"/></g></svg>'),
        url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" height="8" width="8"><g transform="translate(0,-972.36218)"><path fill="#FFFFFF" d="m8,980.36c-4.4183,0-8-3.5817-8-8v8h8z"/></g></svg>'),
        url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" height="8" width="8"><g transform="translate(0,-972.36218)"><path fill="#FFFFFF" d="m8,972.36c0,4.4183-3.5817,8-8,8h8v-8z"/></g></svg>');
	background-position: top right, top left, 0% calc(100% - 4px), 100% calc(100% - 4px);
    background-position: top right, top left, 0% -webkit-calc(100% - 0px), 100% -webkit-calc(100% - 0px);
	background-repeat: no-repeat;
    z-index: 1000;
    
}

#stacks_in_3 video.video {
    display: block;
}