.Window {
    position:fixed;
    left:0%;
    right:0%;
    top:100px;
    bottom:100px;
    margin:auto;
    width:800px;
    background-color:white;
 
    box-shadow: 0px 0px 10px #fff;
 
}
.WindowDialog{
    position:absolute;
    left:0%;
    right:0%;
    top:30px;
    bottom:30px;
    margin:auto;
    
    background-color:white;
}
.WindowBackGround {
    position:fixed;
    left:0px;top:0px;bottom:0px;right:0px;
    width:100%;
    height:100%;
    background-color:black;
    opacity:0.6;
}