.clouds-bg{background:url(/images/clouds2.avif) repeat-x;background-size:contain;width:100%;height:250%;animation:clouds-move 60s linear infinite;opacity:.3}@keyframes clouds-move{0%{background-position-x:0}to{background-position-x:-100vw}}@media (max-width:640px){.clouds-bg{width:250%}}@media (max-width:1024px){.clouds-bg{width:200%}}