body:after{content:"";background-image:var(--grain,none);opacity:.8;z-index:1001;pointer-events:none;background-repeat:repeat;background-size:128px 128px;width:300%;height:300%;animation:8s steps(10,end) infinite grain;position:fixed;inset:-100%}@keyframes grain{0%,to{transform:translate(0)}10%{transform:translate(-5%,-10%)}20%{transform:translate(-15%,5%)}30%{transform:translate(7%,-25%)}40%{transform:translate(-5%,25%)}50%{transform:translate(-15%,10%)}60%{transform:translate(15%)}70%{transform:translateY(15%)}80%{transform:translate(3%,30%)}90%{transform:translate(-10%,10%)}}