.xt-fog-container {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  overflow: hidden;
}

.xt-fog-img {
  position: absolute;
  height: 100vh;
  width: 300vw;
}

.xt-fog-img-first {
  background: url('../imgs/fog-1.png') repeat-x;
  background-size: contain;
  background-position: center;
  animation: marquee 60s linear infinite;
}

.xt-fog-img-second {
  background: url('../imgs/fog-2.png') repeat-x;
  background-size: contain;
  background-position: center;
  animation: marquee 40s linear infinite;
}

@keyframes marquee {
  0% {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
  }

  100% {
    -webkit-transform: translate3d(-200vw, 0, 0);
    transform: translate3d(-200vw, 0, 0);
  }
}