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Test Info:

<!DOCTYPE html>
Any copyright is dedicated to the Public Domain.
<html lang="en-US">
<meta charset="UTF-8">
<title>CSS Test: CSS display:contents</title>
<link rel="author" title="Mats Palmgren" href="">
<link rel="help" href="">
<style type="text/css">
html,body {
color:black; background-color:white; height:100%; font-size:16px; padding:0; margin:0;
iframe { padding:0;margin:0;border-width:0;width:100%;height:90%; color:red; }
function runTest(iframe) {
var win = iframe.contentWindow;
var doc = iframe.contentDocument;
var e = doc.querySelectorAll('*');
var contents = new Array;
for (i=0; i < e.length; ++i) {
var elm = e[i];
if (win.getComputedStyle(elm).display == 'contents') {
contents.push([ elm, elm.nextSibling, elm.parentNode ]);
var i = contents.length;
while(i--) {
var arr = contents[i];
arr[2].insertBefore(arr[0], arr[1]);
<iframe src="display-contents-acid.html" frameborder=0 onload="runTest(this)"></iframe>