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+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Pseudo-Elements Test: active selection and vertical writing-modes</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-pseudo-4/#highlight-styling">
+  <link rel="match" href="reference/active-selection-031-ref.html">
+
+
+  <link rel="stylesheet" href="support/highlights.css">
+  <style>
+  div > div
+    {
+      color: red;
+      float: left;
+      font-size: 32px;
+      margin-left: 16px;
+    }
+
+  div.vrl
+    {
+      writing-mode: vertical-rl;
+    }
+
+  div.vlr
+    {
+      writing-mode: vertical-lr;
+    }
+
+  div.mixed
+    {
+      text-orientation: mixed;
+    }
+
+  div.sideways
+    {
+      text-orientation: sideways;
+    }
+
+  div.upright
+    {
+      text-orientation: upright;
+    }
+
+  div::selection
+    {
+      background-color: yellow;
+      color: green;
+    }
+  </style>
+
+  <script>
+  function startTest()
+  {
+    var targetRange = document.createRange();
+    /* We first create an empty range */
+
+    targetRange.selectNodeContents(document.getElementById("test"));
+    /* Then we set the range boundaries to the contents of div#test */
+
+    window.getSelection().addRange(targetRange);
+    /* Finally, we now add such range of content into a selection */
+  }
+  </script>
+
+  <body onload="startTest();">
+
+  <p>Test passes if each glyph of the 6 "Selected Text" is green and if there is <strong>no red</strong>.
+
+  <div id="test" class="highlight_reftest">
+
+    <div class="vrl mixed">Selected Text</div>
+
+    <div class="vrl sideways">Selected Text</div>
+
+    <div class="vrl upright">Selected Text</div>
+
+    <div class="vlr mixed">Selected Text</div>
+
+    <div class="vlr sideways">Selected Text</div>
+
+    <div class="vlr upright">Selected Text</div>
+
+  </div>