<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Reference file 3 overlapped squares the following colors: blue, yellow and green</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<style>
  #main {
    position: relative;
  }

  #main div {
    width: 100px;
    height: 100px;
  }

  .blue {
    background-color: blue;
    position: absolute;
    left: 0px;
    top: 0px;
  }

  .yellow {
    background-color: yellow;
    position: absolute;
    left: 25px;
    top: 25px;
  }

  .green {
    background-color: green;
    position: absolute;
    left: 50px;
    top: 50px;
  }
</style>
<p>Test passes if there are 3 filled squares with the same size, and <strong>green</strong> is overlapping <strong>yellow</strong> which is overlapping <strong>blue</strong>.</p>

<div id="main">
  <div class="blue"></div>
  <div class="yellow"></div>
  <div class="green"></div>
</div>