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<!doctype html>
<meta charset=utf-8>
<title>Test for transition value at start (Bug 1380133)</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="stylesheet" href="/resources/testharness.css">
a {
color: red;
transition: 100s color;
} {
color: blue;
<a id=anchor><span id=span>Test</span></a>
'use strict';
const anchor = document.getElementById('anchor');
const span = document.getElementById('span');
test(() => {
assert_equals(getComputedStyle(span).color, 'rgb(255, 0, 0)',
'The child of a transitioning element should inherit its'
+ ' parent\'s transition start value');
}, 'Transition start value should be inherited');