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

<% wrap_layout :layout do %>
  <div id="main-content" class="docs-wrapper">
      <div id="sidebar" class="col-sm-3 col-md-3">
        <%= yield_content :sidebar %>
      </div>
      <div class="docs-body col-sm-9 col-md-9">
        <div class="docs-content">
          <%= yield %>
        </div>
        <% if current_page.data.next_url %>
          <div class="pagination">
            <a class="previous-section" href="<%= current_page.data.prev_url %>"></a>
            <% if current_page.data.next_url == "" %>
              <h4><span class="text-green uppercase">End</span></h4>
            <% else %>
              <a class="next-section" href="<%= current_page.data.next_url %>">
                <h4>
                  <span class="text-green uppercase">next</span>
                  <%= current_page.data.next_title %>
                </h4>
              </a>
            <% end %>
          </div>
        <% end %>
      </div>
  </div>
<% end %>