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+<!DOCTYPE html>
+<html>
+ <head>
+  <title>Bug 1141867 - Contiguous right-floating boxes with vertical writing mode</title>
+  <!-- based on testcases from Gerard Talbot, see https://bugzilla.mozilla.org/show_bug.cgi?id=1141867 -->
+  <meta charset="utf-8">
+  <style type="text/css">
+  body {
+    margin: 8px;
+  }
+  p {
+    clear: both;
+  }
+  div.floated-right {
+    background: green;
+    color: green;
+    inline-size: 100px;
+    block-size: 20px;
+    float: right;
+    -ah-writing-mode: vertical-rl;
+    -webkit-writing-mode: vertical-rl;
+    writing-mode: tb-rl; /* IE 11 */
+    writing-mode: vertical-rl;
+  }
+  div#reference-overlapped-red {
+    background-color: red;
+    width: 100px;
+    height: 100px;
+    position: absolute;
+    right: 8px;
+    top: 8px;
+    z-index: -1;
+  }
+  </style>
+ </head>
+
+ <body>
+
+  <div class="floated-right"></div>
+
+  <div class="floated-right"></div>
+
+  <div class="floated-right"></div>
+
+  <div class="floated-right"></div>
+
+  <div class="floated-right"></div>
+
+  <div id="reference-overlapped-red"></div>
+
+  <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+
+ </body>
+</html>