<ul class="to-do-list">
    <li><del datetime="2015-12-03T13:21:32+00:00">Pick up the groceries</del></li>
    <li><del datetime="2015-12-03T15:15:00+00:00">Collect the kids from school</del></li>
    <li>Cook dinner</li>
    <li>Work on fancy side projects</li>
</ul>

body {
  color: #333;
  font-family: Tahoma, sans-serif;
  font-size: 16px;
  line-height: 1.25;
}