@media screen and (min-width: 320px) and (max-width: 767px) and (orientation: landscape) {
  html:after {
    content: "";
    background-image: url(../img/deviceturn.png);
    background-position: center center;
    background-size: cover;
    background-color: #20201f;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 1;
    transition: opacity 0.5s;
    z-index: 9999999999;
  }
}