.bg{opacity:.8;z-index:0;background-image:linear-gradient(-60deg,#6c3 50%,#09f 50%);animation:3s ease-in-out infinite alternate slide;position:absolute;inset:0 -50%}.bg2{animation-duration:4s;animation-direction:alternate-reverse}.bg3{animation-duration:5s}@keyframes slide{0%{transform:translate(-25%)}to{transform:translate(25%)}}