body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
  }

  .top-prm{
    height: auto; 
    width: 100%;
  }
@keyframes icon {
  0%   {left:0px;}
  25%  {left:2%;}
  50%  {left:5%;}
  75%  {left:2%;}
  100% {left:0px;}
}