.waves{--x:0px;--y:0px}.waves-canvas{width:100%;height:100%;display:block}.waves:before{content:"";pointer-events:none;width:200px;height:200px;transform:translate(calc(var(--x) - 100px),calc(var(--y) - 100px));opacity:0;background:radial-gradient(circle,#ffffff1a 0%,#0000 70%);border-radius:50%;transition:opacity .3s;position:absolute}.waves:hover:before{opacity:1}