.centered{
    position:fixed;
    top:calc(50% - 150px);
    left:calc(50% - 250px);
    min-height:300px;
    width:500px;
    background-color:white;
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
}

.closing_x{
    position:absolute;
    top:-10px;
    right:0px;
    color:darkgrey;
    font-size:30px;
}

#overlay{
    z-index:24;
    width:101%;
    height:101%;
    position:absolute;
    background-color:rgba(0,0,0,0.2);
}