.grain{height:100%}.grain:after{animation:grain 8s steps(10) infinite;background-image:url(/storage/images/assets/grain.png);content:"";height:300%;left:-50%;opacity:.9;position:fixed;top:-100%;width:300%;z-index:-1}@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%,35%)}90%{transform:translate(-10%,10%)}}