.bien-glass{--extended-by:100px;bottom:calc(var(--extended-by)*-1);--cutoff:calc(100% - var(--extended-by));-webkit-mask-image:linear-gradient(to bottom,#000 0,#000 var(--cutoff),transparent var(--cutoff));mask-image:linear-gradient(to bottom,#000 0,#000 var(--cutoff),transparent var(--cutoff))}