@keyframes bgimage {
    0%{
        background-position: 0% 50%;
    }
    50%{
        background-position: 100% 50%;
    }
    100%{
        background-position: 0% 50%;
    }
  }

  body {
    background-image: url("../img/1.png");
    background-size: 150%;
    animation: bgimage 180s ease infinite;
}