<!DOCTYPE html>
<div style="columns: 2; width: 200px; height: 100px; column-gap: 0; column-fill: auto">
  <div style="width: 90px; height: 180px; background: yellow">
    <div style="position: relative; top: 20px; left: 10px; width: 70px; height: 160px; background: green">
      <div style="position: relative; top: 20px; left: 10px; width: 60px; height: 140px; background: blue">
      </div>
    </div>
  </div>
</div>