<div>
  <div class="box01">
    箱
  </div>
  <div class="box02">
    箱
  </div>
</div>

div{
  text-align: center;
}
.box01,.box02{
  width: 150px;
}
.box01{
  margin-bottom: 50px;
  background-color: lightblue;
}
.box02{
  margin-top: 10px;
  background-color: pink;
}