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              <h2>Firefox bug using outline property</h2>

<div class="box">
  <div class="child"></div>

<p>If you test this page in Firefox, the outline does not appear correctly. This is caused by the absolutely positioned child element inside the element that has the outline.</p>
              body {
  padding: 40px;
  text-align: center;

h2 {
  margin: 0 0 60px;

.box {
  width: 200px;
  height: 200px;
  background: #ccc;
  margin: auto;
  border: solid 8px yellow;
  outline: solid 8px orange;
  outline-offset: 10px;

.child {
  width: 20px;
  height: 20px;
  background: lightblue;
  margin-left: -100px;

input {
  margin-top: 40px;
  width: 200px;

output {
  display: block;
  margin-top: 40px;

p {
  max-width: 400px;
  display: block;
  margin: 30px auto;
  text-align: left;
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