<div></div>

div {
    width: 100px;
    height: 100px;
    position: relative;
    background-color: yellow;
    animation-name: mymove;
    animation-duration: 3s;
}
@keyframes mymove {
  0%   {left: 0px; top: 0px;}
  100%  {left: 150px; top: 0px;}
}