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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS test reference</title>
<style>
div {
font-size: 20px;
color: transparent;
}
div:nth-of-type(1) { background: green; }
div:nth-of-type(2) { background: blue; }
div:nth-of-type(1),
div:nth-of-type(2) {
height: 5ch;
width: 5ch;
}
div:nth-of-type(3) {
background: orange;
writing-mode: vertical-rl;
text-orientation: upright;
height: 5ch;
width: 5ch;
}
</style>
<body>
<p>Test passes if there is a <strong>green square</strong> below, and if it is the <strong>same size as the blue</strong> one, not the orange one.
<p>If any of the 3 colored shapes is not a square, or if the orange and blue squares are the same size, the test fails.
<div></div>
<div></div>
<div></div>
</body>