.avalon23_loader_wrapper{
    position: fixed;
    top: 0;
    width: 100%;
    height: 100%;;
    z-index: 1000;  
    display: none;
}
.avalon23_loader_wrapper:after{
    content: " ";
    height: 100%;
    position: fixed;
    width: 100%;
    opacity: 0.6;
}
.avalon23_loader_img{
    position: absolute;
    top: calc(50% - 75px);
    left: calc(50% - 75px);
    height: 150px;
    z-index: 3;
}