body {
  width: 100%;
  overflow-x: hidden;
  margin: 0;
}
section {
  height: 480px;
  margin: 10px;
  position: relative;
}
section div {
  background-color: slategrey;
  height: 100%;
  width: 720px;
  position: absolute;
  top: 0;
}
section:nth-child(even) div {
  left: 0;
}
section:nth-child(odd) div {
  right: 0;
}
a div {
  display: flex;
  justify-content: center;
  align-items: center;
}
a div span {
  color: blanchedalmond;
}