empty-bare.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Bare :empty</title>
<link rel="stylesheet" href="c/style-show-tr.css" type="text/css" media="all" />
<style type="text/css" media="all" contenteditable>
html {background: #CCC;}
body {background: #FFF;}
ul {margin-left: 0;
  padding-left: 3em;}
li {margin: 0.75em 0;}

*:empty {
   padding: 0.25em;
   outline: 1px dashed red;
   background: yellow;
}
body:empty {
   background: #FCC;
}
</style>
</head>
<body>

un-elemented text (so it's a node of the <code>body</code>)

<h2>Empties</h2>
<ul>
<li>empty line item, a return-only, and a space-only line item follow (in that order):</li>
<li></li>
<li>
</li>
<li> </li>
<li>empty span [ <span></span> ]</li>
<li><span>all of the text in this list item is inside a <code>span</code></span></li>
<li>missing image [ <img src="!" alt="" title="missing image" /> ]</li>
<li>loaded image [ <img src="i/tester.jpg" title="blah" alt="blah" /> ]</li>
<li>break element [ <br /> ]</li>
<li><form action="#">a form with...
<ul>
<li>a text input [ <input type="text" /> ]</li>
<li>a text input with a value [ <input type="text" value="a value" /> ]</li>
<li>a radio input [ <input type="radio" /> ]</li>
<li>a checkbox input [ <input type="checkbox" /> ]</li>
<li>a submit input [ <input type="submit" /> ]</li>
<li>a textarea [<textarea rows="3" cols="30"></textarea> ]</li>
<li>a textarea with content [<textarea rows="3" cols="30">content</textarea> ]</li>
</ul>
</form></li>
</ul>

</body>
</html>