title: Float left doesn't work normally
body: <p>I'm trying to make the form responsive.
  Here is the link to the form page <a href="http://newdev.web-dorado.info/sahakj25/index.php/form" rel="nofollow">http://newdev.web-dorado.info/sahakj25/index.php/form</a>
  Everything works fine besides the div that contains the two checkboxes.
  If the div's size is set to 150px it's not moving down when resizing the page, but if I increase the size to 151px for example it works fine. Can anyone explain what can be the cause of this? </p>
  
  <p>Here is the JSFiddle example: <a href="http://jsfiddle.net/PcscG/" rel="nofollow">http://jsfiddle.net/PcscG/</a></p>
  
  <p>The div I'm trying to float left is on line 18. </p>
  
  <pre><code>&lt;div wdid="2" class="wdform_row"&gt;
            &lt;div type="type_checkbox" class="wdform_field"&gt;
              &lt;div class="wdform-label-section" style="float:left; width: 150px;"&gt;&lt;span class="wdform-label"&gt;Checkbox:&lt;/span&gt;&lt;/div&gt;
              &lt;div class="wdform-element-section " style="float:left;"&gt;
                &lt;div style="display: table;"&gt;
                  &lt;div style="display: table-row-group;"&gt;
                    &lt;div style="display: table-row-group;"&gt;
                      &lt;div style="display: table-row;"&gt;
                        &lt;div valign="top" idi="0" style="display: table-cell;"&gt;
                          &lt;label id="2_label_element0" class="wdform-ch-rad-label" for="2_element130"&gt;option 1&lt;/label&gt;
                            &lt;input type="checkbox" id="2_element130" name="2_element130" value="option 1"&gt;
                        &lt;/div&gt;
                      &lt;/div&gt;
                      &lt;div style="display: table-row;"&gt;
                        &lt;div valign="top" idi="1" style="display: table-cell;"&gt;
                          &lt;label id="2_label_element1" class="wdform-ch-rad-label" for="2_element131"&gt;option 2&lt;/label&gt;
                          &lt;input type="checkbox" id="2_element131" name="2_element131" value="option 2"&gt;
                        &lt;/div&gt;
                      &lt;/div&gt;
                    &lt;/div&gt;
                  &lt;/div&gt;
                &lt;/div&gt;
              &lt;/div&gt;
            &lt;/div&gt;
          &lt;/div&gt;
  </code></pre>