* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  overflow: hidden;
}

#container {
  height: 100vh;
  width: 100%;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
}

.section {
  height: 100vh;
  scroll-snap-align: start;
  background-size: cover;
  background-position: center;
}