<!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>