.overlay{background:rgba(0,0,0,0.5);
    position:fixed;
    z-index:99999;
    top:0;
    left:0;
    width: 100%;
    height: 100%;
}
.loader-custom{
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
}
.three-quarters-loader:not(:required){
    animation: three-quarters-loader 1700ms infinite linear;
    border: 8px solid #1cc99f;
    border-right-color: transparent;
}