.background {
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  overflow: hidden;
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  height: 130vh;
  position: fixed;
  width: 100%;
  -webkit-transform: translateY(0vh);
  -ms-transform: translateY(0vh);
  transform: translateY(0vh);
  -webkit-transition: all 1.4s cubic-bezier(0.22, 0.44, 0, 1);
  transition: all 1.4s cubic-bezier(0.22, 0.44, 0, 1);
}

.background:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100vh;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.3);
}

.background:first-child {
  background-image: url(https://unsplash.it/2928/2264?image=325);
  -webkit-transform: translateY(0vh);
  -ms-transform: translateY(0vh);
  transform: translateY(0vh);
}

.background:first-child .content-wrapper {
  -webkit-transform: translateY(0vh);
  -ms-transform: translateY(0vh);
  transform: translateY(0vh);
}

.background:nth-child(2) { background-image: url(https://unsplash.it/2928/2264?image=425); }

.background:nth-child(3) { background-image: url(https://unsplash.it/2928/2264?image=525); }

/* Set stacking context of slides */

.background { background-size: cover !important; height: 100vh !important; background-position: center bottom !important; }
.background:nth-child(1) { z-index: 8; }
.background:nth-child(2) { z-index: 7; }
.background:nth-child(3) { z-index: 6; }
.background:nth-child(4) { z-index: 5; }
.background:nth-child(5) { z-index: 4; }
.background:nth-child(6) { z-index: 3; }
.background:nth-child(7) { z-index: 2; }
.background:nth-child(8) { z-index: 1; }

.content-wrapper {
  height: 100vh;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  text-align: center;
  -webkit-flex-flow: column nowrap;
  -ms-flex-flow: column nowrap;
  flex-flow: column nowrap;
  color: #fff;
  font-family: Montserrat;
  text-transform: uppercase;
  -webkit-transform: translateY(40vh);
  -ms-transform: translateY(40vh);
  transform: translateY(40vh);
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  -webkit-transition: all 1.9s cubic-bezier(0.22, 0.44, 0, 1);
  transition: all 1.9s cubic-bezier(0.22, 0.44, 0, 1);
}

.content-title {
  font-size: 12vh;
  line-height: 1.4;
}