@charset "utf-8";

body {
  margin: 0;
  padding: 0;
}
*, *::before, *::after {
  box-sizing: border-box;
}

.contents {
  display: flex;
  overflow-x: scroll;
  scroll-snap-type: x;

  gap: 20px;
}
.item {
  flex-shrink: 0;

  display: flex;
  align-items: center;
  justify-content: center;
  width: 50%;
  height: 128px;
  font-size: 64px;
}
.contents.start .item {
  scroll-snap-align: start;
}
.contents.center .item {
  scroll-snap-align: center;
}
.contents.end .item {
  scroll-snap-align: end;
}

.item:nth-child(1) {background-color: tomato;}
.item:nth-child(2) {background-color: skyblue;}
.item:nth-child(3) {background-color: gold;}
.item:nth-child(4) {background-color: purple;}
.item:nth-child(5) {background-color: lime;}