@keyframes shrink {
  0% {
  background-position: left center;
  }
  100% {
  background-position: right center;
}
footer
{
  background-size: cover;
  background-position: left center;
  animation: shrink 15s infinite alternate!important;
}
.js-slide-image-slider-content-default-2 {
  background-position: right center!important;
  }