@keyframes cloud1 {
    from {
		 left: 500px;
    }
    to {       
		left:-200px;
    }
}.el{
  animation: cloud1 1s ease-in-out forwards;
}@keyframes cloud1 {
    0% {
     left: 500px;
     opacity: 1;
    }
    99%{
     opacity: 1;
    }
    100% {       
     left:-200px;
     opacity: 0;
    }
}