.login-background-image{width:100%;height:100%;background-size:cover;background-position:50% 50%;position:fixed;top:0;left:0;z-index:1;background-image:url('/Content/contemp/img/contemp.jpg')}@supports (background-image:url("image.avif")){.login-background-image{background-image:url('/content/contemp/img/contemp.avif');}}