.backdrop{
    position:fixed;
    top:0px;
    width:100vw;
    height:100vh;
    background-color:rgba(0,0,0,0.5);
    z-index: 9999999999999999999999;
    display: none;
}

.backdrop svg{
    position:absolute;
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    
}