#stage:after{content:"";opacity:.1;mix-blend-mode:soft-light;pointer-events:none;background-image:url(https://upload.wikimedia.org/wikipedia/commons/7/76/1k_Dissolve_Noise_Texture.png);width:300%;height:300%;animation:8s steps(10,end) infinite animateGrain;display:block;position:absolute;top:0;left:0}@keyframes animateGrain{0%,to{transform:translate(0)}10%{transform:translate(-5%,-10%)}20%{transform:translate(-15%,-20%)}30%{transform:translate(-5%,-10%)}40%{transform:translate(-15%,-20%)}50%{transform:translate(-5%,-10%)}60%{transform:translate(-15%,-20%)}70%{transform:translate(-5%,-10%)}80%{transform:translate(-15%,-20%)}90%{transform:translate(-5%,-10%)}to{transform:translate(-15%,-20%)}}