body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
}

h1 {
  text-align: center;
  margin-bottom: 1.5em;
}

h2 {
  text-align: center;
  color: #555;
  margin-bottom: 0;
}

.carousel {
  padding: 20px;
  -webkit-perspective: 500px;
          perspective: 500px;
  overflow: hidden;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.carousel > * {
  -webkit-box-flex: 0;
      -ms-flex: 0 0 auto;
          flex: 0 0 auto;
}
.carousel figure {
  margin: 0;
  width: 40%;
  -webkit-transform-style: preserve-3d;
          transform-style: preserve-3d;
  -webkit-transition: -webkit-transform 0.5s;
  transition: -webkit-transform 0.5s;
  transition: transform 0.5s;
  transition: transform 0.5s, -webkit-transform 0.5s;
}
.carousel figure img {
  width: 100%;
  box-sizing: border-box;
  padding: 0 0px;
}
.carousel figure img:not(:first-of-type) {
  position: absolute;
  left: 0;
  top: 0;
}
.carousel nav {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  margin: 20px 0 0;
}
.carousel nav button {
  -webkit-box-flex: 0;
      -ms-flex: 0 0 auto;
          flex: 0 0 auto;
  margin: 0 5px;
  cursor: pointer;
  color: #333;
  background: none;
  border: 1px solid;
  letter-spacing: 1px;
  padding: 5px 10px;
}