*{
    margin: 0
}
@keyframes moveRight {
  0%   { background-position: 0 0; }
  100% { background-position: 100% 0; }
}

@keyframes moveLeft {
  0%   { background-position: 100% 0; }
  100% { background-position: 0 0; }
}
.row {
  height: 200px;
  background-image: url('meme-cat.gif');
  background-repeat: repeat;
  background-size: contain;
}

.left {
  animation: moveRight 10s linear infinite;
}

.right {
  animation: moveLeft 10s linear infinite;
}