title: bootstrap form-group rows not working
body: <p>I'm not sure what I'm doing wrong here. The form-group class should act like a row in the form-horizontal form, correct?  Here's the code.  It's an add/drop page for fantasy football.  </p>
  
  <pre><code>&lt;h2&gt;Add/Drop Player&lt;/h2&gt;
  &lt;div class="container"&gt;
    &lt;%= form_tag(slot_do_add_drop_path(@slot), method: 'post', :html =&gt; {:class =&gt; 'form-horizontal', :role =&gt; 'form'}) do %&gt;
  
      &lt;div class="form-group"&gt;
        &lt;div class="col-sm-2"&gt;Player to Drop&lt;/div&gt;
      &lt;/div&gt;
      &lt;div class="form-group"&gt;
        &lt;div class="col-sm-2"&gt;&lt;%= @slot.player.display_name %&gt; - &lt;%= @slot.player.position %&gt;&lt;/div&gt;
      &lt;/div&gt;
  
      &lt;div class="form-group"&gt;
        &lt;div class="col-sm-2"&gt;Add Player&lt;/div&gt;
      &lt;/div&gt;
      &lt;%= render partial: "free_agent_select", locals: {free_agents: @free_agents_qbs, p_id: 'qb_id', prompt: 'Select QB'}%&gt;
      &lt;%= render partial: "free_agent_select", locals: {free_agents: @free_agents_wrs, p_id: 'wr_id', prompt: 'Select WR'}%&gt;
      &lt;%= render partial: "free_agent_select", locals: {free_agents: @free_agents_rbs, p_id: 'rb_id', prompt: 'Select RB'}%&gt;
      &lt;%= render partial: "free_agent_select", locals: {free_agents: @free_agents_tes, p_id: 'te_id', prompt: 'Select TE'}%&gt;
      &lt;%= render partial: "free_agent_select", locals: {free_agents: @free_agents_ks, p_id: 'k_id', prompt: 'Select K'}%&gt;
      &lt;%= render partial: "free_agent_select", locals: {free_agents: @free_agents_defs, p_id: 'def_id', prompt: 'Select DEF'}%&gt;
      &lt;div class="form-group"&gt;
        &lt;div class="col-sm-2"&gt;
          &lt;%= submit_tag 'Submit', name: 'add_drop_player', class: 'form-control'%&gt;
        &lt;/div&gt;
      &lt;/div&gt;
    &lt;% end %&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>The partial free_agent_select</p>
  
  <pre><code>&lt;div class="form-group"&gt;
    &lt;div class="col-md-2"&gt;
      &lt;%= collection_select :player, p_id, free_agents, :id, :display_name, {:prompt =&gt; prompt}, {:class =&gt; 'form-control'} %&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/5ohMH.jpg" alt="The form all rendering on one line"></p>