title: how to create bootstrap modal with transparent background
body: <p>I have a problem with the modal, it shows black background instead of transparent. 
  It might be a problem related to the CSS.
  Note:  I changed Opacity:.7 in the class .fade but that didn't affect anything </p>
  
  <pre><code>  &lt;!-- Modal --&gt;
      &lt;div class="modal fade" id="myModal"  style="position:fixed; top:0px; left:800px;width:600px; background:none; " role="dialog"&gt;
      &lt;div class="modal-dialog"&gt;
  
        &lt;!-- Modal content--&gt;
        &lt;div class="modal-content"&gt;
          &lt;div class="modal-header"&gt;
  
            &lt;button type="button" class="close" data-dismiss="modal"&gt;&amp;times;&lt;/button&gt;
            &lt;h4 class="modal-title"&gt;Adding Wall&lt;/h4&gt;
          &lt;/div&gt;
          &lt;div class="modal-body"&gt;
              &lt;label&gt;Wall Id:     &lt;/label&gt;&lt;input type="text" id="wallNametxt"/&gt;&lt;br&gt;
           &lt;label&gt;Wall Name:&lt;/label&gt;&lt;input type="text" id="wallNametxt1"/&gt;
  
          &lt;/div&gt;
          &lt;div class="modal-footer"&gt;
            &lt;input type="button" id="btn" value="Add!" name="save" class="btn btn-default"/&gt;
            &lt;button type="button" class="btn btn-default" data-dismiss="modal"&gt;Close&lt;/button&gt;
          &lt;/div&gt;
        &lt;/div&gt;
  
      &lt;/div&gt;
    &lt;/div&gt;&lt;!--End of Modal--&gt;
  </code></pre>
  
  <p><strong><a href="https://i.stack.imgur.com/d20Sn.png" rel="noreferrer">Click to see the Output</a></strong></p>
  
  <p>Update!!
  It worked perfectly. But the modal is being placed in a glass box with the same height of the page.
   I can limit that to the height, width properties, but I would prefer to know the reason.
  <a href="https://i.stack.imgur.com/GT2c3.png" rel="noreferrer">Click to see output</a></p>