<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Reference: a square with a green cross</title>
<link rel="author" title="Rachel Andrew" href="mailto:me@rachelandrew.co.uk" />
<style>
    #grid {
        width:200px;
        height: 200px;
        background-color: green;
        position: relative;
    }

    #grid > div {
        background-color: silver;
        width: 90px;
        height: 90px;
        position: absolute;
    }

    #grid :nth-child(1) {
        top: 0;
        left: 0;
    }

    #grid :nth-child(2) {
        top: 0;
        left: 110px;
    }

    #grid :nth-child(3) {
        top: 110px;
        left: 0;
    }

    #grid :nth-child(4) {
        top: 110px;
        left: 110px;
    }
</style>

<p>The test passes if it has the same visual effect as reference.</p>
<div id="grid">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
</div>