packer-cn/website/source/layouts/inner.erb

<% wrap_layout :layout do %>
<div class="container">
  <div class="row">
    <div id="docs-sidebar" class="col-sm-3 col-md-3 col-xs-12 hidden-print" role="complementary">
      <%= yield_content :sidebar %>
    </div>

    <div id="inner" class="col-sm-9 col-md-9 col-xs-12" role="main">
      <%= yield %>
    </div>
  </div>
</div>
<% end %>