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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!-- Testcase with flex items containing overlapping content, with
+ "z-index" set on some of them, which should make them create
+ stacking contexts. -->
+<html xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+ <title>CSS Test: Testing that 'z-index' property makes flex items form stacking contexts</title>
+ <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+ <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#painting"/>
+ <link rel="match" href="flexbox-items-as-stacking-contexts-001-ref.xhtml"/>
+ <style>
+ .flexbox {
+ width: 90px;
+ height: 10px;
+ border: 2px solid gray;
+ display: flex;
+ margin-bottom: 10px;
+ }
+ .a {
+ width: 10px;
+ height: 10px;
+ background: lightblue;
+ min-width: 0;
+ }
+ .b {
+ width: 10px;
+ height: 10px;
+ background: pink;
+ min-width: 0;
+ margin-right: 10px;
+ }
+ .aKid {
+ margin-left: 3px;
+ margin-top: 3px;
+ width: 10px;
+ height: 10px;
+ background: steelblue;
+ border: 1px solid blue;
+ }
+ .bKid {
+ margin-left: 3px;
+ margin-top: 6px;
+ width: 10px;
+ height: 10px;
+ background: violet;
+ border: 1px solid purple;
+ }
+ .z0 { z-index: 0; }
+ .z1 { z-index: 1; }
+ .zn1 { z-index: -1; }
+
+ </style>
+ </head>
+ <body>
+ <!-- No "z-index" -->
+ <div class="flexbox">
+ <div class="a"><div class="aKid"/></div>
+ <div class="b"><div class="bKid"/></div>
+ </div>
+
+ <!-- Various "z-index" just on the first item -->
+ <div class="flexbox">
+ <div class="a zn1"><div class="aKid"/></div>
+ <div class="b"><div class="bKid"/></div>
+
+ <div class="a z0"><div class="aKid"/></div>
+ <div class="b"><div class="bKid"/></div>
+
+ <div class="a z1"><div class="aKid"/></div>
+ <div class="b"><div class="bKid"/></div>
+ </div>
+
+ <!-- Various "z-index" just on the second item -->
+ <div class="flexbox">
+ <div class="a"><div class="aKid"/></div>
+ <div class="b zn1"><div class="bKid"/></div>
+
+ <div class="a"><div class="aKid"/></div>
+ <div class="b z0"><div class="bKid"/></div>
+
+ <div class="a"><div class="aKid"/></div>
+ <div class="b z1"><div class="bKid"/></div>
+ </div>
+
+ <!-- Various "z-index" on the first item, w/ "z-index:0" on second item -->
+ <div class="flexbox">
+ <div class="a zn1"><div class="aKid"/></div>
+ <div class="b z0"><div class="bKid"/></div>
+
+ <div class="a z0"><div class="aKid"/></div>
+ <div class="b z0"><div class="bKid"/></div>
+
+ <div class="a z1"><div class="aKid"/></div>
+ <div class="b z0"><div class="bKid"/></div>
+ </div>
+
+ <!-- Various "z-index" on the second item, w/ "z-index:0" on first item -->
+ <div class="flexbox">
+ <div class="a z0"><div class="aKid"/></div>
+ <div class="b zn1"><div class="bKid"/></div>
+
+ <div class="a z0"><div class="aKid"/></div>
+ <div class="b z0"><div class="bKid"/></div>
+
+ <div class="a z0"><div class="aKid"/></div>
+ <div class="b z1"><div class="bKid"/></div>
+ </div>
+
+ </body>
+</html>