<html>
<head>
<link href="style.css" rel="stylesheet">
<style>
.grey-element {
background-color: lightgrey;
}
</style>
</head>
<body>
<ol>TO DO:
<li class="grey-element">Floss</li>
<li>Feed Cat</li>
<li class="grey-element">Nap</li>
<li>Plan holiday</li>
<li class="grey-element">Order tea</li>
</ol>
</body>
</html>]]>Make sure to place .grey-element {
first, then background-color: lightgrey;
and finally }
.