@media (min-width: 0px) and (max-width: 801px)
{
  #tm-bg {
    position: fixed;
    top: 10%;
    left: 50px;
    width: 30%;
    height: 30%;
    background-image: url(../img/pop-bg.jpg);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    z-index: -1;
    transition: all 0.3s ease;
  }

}