.overlay{
    font-size: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255 , .5);
    z-index: 10;
}
.overlay:before{
    font-size: 32px;
}