<section class="abstract">
  <article><%= render_markdown('intro') %></article>
  <article><%= render_markdown('background') %></article>
  <article><%= render_markdown('who') %></article>
</section>

<section class="concrete">
  <article><%= render_markdown('toc') %><article>
</section>



<section class="abstract">
  <article><%= render_markdown('intro') %></article>
  <article><%= render_markdown('background') %></article>
  <article><%= render_markdown('who') %></article>
</section>

<section class="concrete">
  <article><%= render_markdown('toc') %></article>
</section>



Fix broken markup on main page
Fix broken markup on main page