app/views/winners/index.html.erb
<div class='content'>
<%= concept(Challenge::Cell::ChallengeMasthead,
@challenge,
current_participant: current_participant) %>
<%= render partial: 'challenges/show/subnav',
locals: { challenge: @challenge } %>
<br/>
<div class="row">
<div class='markdown-wrap'>
<%= sanitize(@challenge.winner_description) %>
</div>
</div>
</div>