<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Containment Test: Reference file</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<style>
  div.inline-block {
    display: inline-block;
    height: 100px;
    width: 100px;
  }

  div#blue-test {
    background-color: blue;
    color: transparent;
    font-size: 100px;
    padding: 50px;
    box-sizing: border-box;
  }

  div#orange-reference {
    background-color: orange;
  }
</style>

<p>This test passes if the painted blue area is <strong>exactly as wide as</strong> the orange square.

<div>
  <div id="blue-test" class="inline-block">B</div>
</div>

<div>
  <div id="orange-reference" class="inline-block"></div>
</div>