<div class="tag_list container_fluid">
  <% alpha_tags.each_slice(6) do |gr| %>
    <div class="row">
      <% gr.each do |kg, vg| %>
        <div class="col-xs-2 col-md-2">
          <h2 class="bg-info text-center">
            <%= kg %>
          </h2>
          <% vg.each do |tag, count| %>
            <p>
              <div class="badge">
                <%= count %>
              </div>
              <%= link_to [post_type.pluralize, tag: tag] do %>
                <%= glyph count == 1 ? :tag : :tags %>
                <%= tag %>
              <% end %>
            </p>
          <% end %>
        </div>
      <% end %>
    </div>
  <% end %>
</div>

<div class="tag_list container_fluid">
  <% alpha_tags.each_slice(6) do |gr| %>
    <div class="row">
      <% gr.each do |kg, vg| %>
        <div class="col-xs-12 col-sm-2">
          <h2 class="bg-info text-center">
            <%= kg %>
          </h2>
          <% vg.each do |tag, count| %>
            <p>
              <div class="badge">
                <%= count %>
              </div>
              <%= link_to [post_type.pluralize, tag: tag] do %>
                <%= glyph count == 1 ? :tag : :tags %>
                <%= tag %>
              <% end %>
            </p>
          <% end %>
        </div>
      <% end %>
    </div>
  <% end %>
</div>

Set col to a different values to improve responsiveness
Set col to a different values to improve responsiveness
