body {
  margin: 0;
  padding: 0;
}

.wrapper {
  height: 100vh;
  overflow: auto;
  scroll-snap-type: y mandatory;
}

.section {
  scroll-snap-align: center;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #de5448;
  color: #fff;
  font-size: 3em;
}

.bg-blue {
  background: #4267b2;
}

.bg-green {
  background: #4CAF50;
}