<h3 ng-if="vm.showHeader">Legend</h3>
<ul>
    <li class="difficulty-legend__deadly">
        Deadly: One of these is a deadly challenge
    </li>
    <li class="difficulty-legend__hard">
        Hard: One of these is a hard challenge
    </li>
    <li class="difficulty-legend__medium">
        Medium: One of these is a medium challenge
    </li>
    <li class="difficulty-legend__easy">
        Easy: One of these is an easy challenge
    </li>
    <li class="difficulty-legend__pair">
        Pair: Two of th