милт,
<!DOCTYPE HTML>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<style type="text/css">
* {
border: #3333FF solid 1px;
padding: 5px;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
$(function(){
$( ':not(:has(>))' ).css('background', 'rgb(102, 255, 102)');
});
</script>
</head>
<body>
<div>
<a>Нажимаем</a>
</div>
<ul>
<li>1</li>
</ul>
</body>
</html>