cloud.module-cloud {
    display: block;
    position: absolute;
    z-index: 1;
    animation:moveClouds 30s linear infinite;
    pointer-events:none;
    transition-delay:.5s;
}

@keyframes moveClouds {  
  0% { left:calc(0vw - 200px) }
  100% { left:calc(100vw + 120px) }
}