:root{--login-bg-image:url(/overlays/login-overlay.webp)}.login-bg-overlay{position:relative}.login-bg-overlay:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background-image:var(--login-bg-image);background-size:cover;background-position:0;background-repeat:no-repeat;opacity:.5;mix-blend-mode:overlay}