* {
    margin:0;padding:0;background:none
}

body{
	margin: 0;
    padding: 0;
    color: #fff;
    overflow: hidden;
}

#parentDiv{
	position: absolute;
    top: 0px;
    left: 0px;
    width: 1920px;
    height: 1080px;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1000;
}

#rootDiv{
    position: absolute;
    top: 0px;
    left: 0px;
    width: 1920px;
    height: 1080px;
    background: rgb(0, 0, 0);
    z-index: -1;
}
}