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+<!DOCTYPE html>
+<html lang="en"><head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8"><meta charset="utf-8">
+<title>Bug 1443027 - Test merging across multiple paints</title>
+
+<style>
+
+body { opacity: 0.9; }
+
+div {
+  position: absolute;
+  transform: translatez(1px);
+}
+
+#A {
+  left: 250px;
+  top: 50px;
+  width: 100px;
+  height: 100px;
+  background-color: red;
+}
+
+#B {
+  left: 200px;
+  top: 0px;
+  width: 100px;
+  height: 100px;
+  background-color: yellow;
+}
+
+#C {
+  left: 0px;
+  top: 0px;
+  width: 100px;
+  height: 100px;
+  background-color: green;
+}
+
+</style>
+</head>
+<body>
+<div id="A"></div>
+<div id="B"></div>
+<div id="C"></div>
+</body></html>