<html>
<head>
<style>
.redElement {
background-color: red;}
</style>
</head>
<body>
<ol>TO DO:
<li class="redElement">Exercise</li>
<li>Groom dog</li>
<li class="redElement">Stretch</li>
<li>Tidy apartment</li>
<li class="redElement">Laundry</li>
</ol>
</body>
</html>]]>Make sure to assemble class = "redElement"
.