<!DOCTYPE html> <meta charset="UTF-8"> <title>CSS Reftest Reference</title> <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <style> div { background-color: yellow; color: green; display: inline; font-size: 300%; } </style> <script> function startReference() { document.getElementById("ref").focus(); /* Some browsers, like Chromium 80+, will transfer focus to a selected element like a contenteditable div and therefore style the border of such element according to the user agent stylesheet rule: :focus {outline: -webkit-focus-ring-color auto 1px;} . So, we deliberately trigger such focus with the focus() method in the reference file. */ document.getElementById("ref").style.caretColor = "yellow"; /* When a contenteditable element is focused in Firefox 82+, then the caret becomes visible and blinking and it is painted with the ::selected's color which is the green color in this case. We therefore counter, neutralize this by resetting the caret's color to the background color. */ } </script> <body onload="startReference();"> <p>Test passes if each glyph of "Selected Text" is green with a yellow background and if there is <strong>no red</strong>. <div contenteditable="true" id="ref">Selected Text</div>