body {
  font-family: sans-serif;
  font-size: 72px;
  color: #333;
}

header {
  position: fixed;
  text-align: center;
  vertical-align: middle;
  width: 100%;
  margin-top: 20vh;
}

section {
  background-color: #71c1e3;
  height: 100vh;
}

section.s3 {
  background-color: #fff;
}

section.s2,
section.s5 {
  background-color: #e4929e;
}