*, *::after, *::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

html { font-size: 62.5%; }

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.6rem;
  color: #fff;
  background-color: #22283f;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: #267481;
}

.vs-section h2 {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: block;
  height: 4rem;
  margin: auto;
  font-size: 4rem;
  font-weight: 300;
  text-align: center;
}

.vs-section:nth-of-type(1) { background-image: url('https://unsplash.it/1920/1276?image=703'); }

.vs-section:nth-of-type(2) { background-image: url('https://unsplash.it/1920/1276?image=603'); }

.vs-section:nth-of-type(3) { background-image: url('https://unsplash.it/1920/1276?image=503'); }

.vs-section:nth-of-type(4) { background-image: url('https://unsplash.it/1920/1276?image=403'); }

.vs-section:nth-of-type(5) { background-image: url('https://unsplash.it/1920/1276?image=203'); }

.vs-vertical-nav {
  position: fixed;
  z-index: 1;
  top: 50%;
  right: 3%;
  bottom: auto;
  display: block;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);
}

.vs-vertical-nav a {
  display: block;
  overflow: hidden;
  width: 40px;
  height: 40px;
  white-space: nowrap;
  text-indent: 100%;
  background: url('../images/cd-icon-arrow.svg') no-repeat center center;
}

.vs-vertical-nav a.vs-prev {
  margin-bottom: 10px;
  -webkit-transform: rotate(180deg);
  -moz-transform: rotate(180deg);
  -ms-transform: rotate(180deg);
  -o-transform: rotate(180deg);
  transform: rotate(180deg);
}