.card{position:relative}.card:hover:before{opacity:1}.card:before{background:radial-gradient(800px circle at var(--mouse-x) var(--mouse-y),rgba(255,255,255,.06),transparent 40%);border-radius:inherit;content:"";height:100%;left:0;position:absolute;top:0;width:100%;z-index:2;opacity:0;transition:opacity .5s;pointer-events:none}