title: How to stop boostrap dropdown been partly hidden underneath next table row
body: <p>I have this code:</p>
  
  <pre><code>&lt;tr&gt;
      &lt;div class="form-group" &gt;
        &lt;th&gt;
          &lt;input type="email" value="{{email}}" class="form-control" id="email"&gt;
        &lt;/th&gt;
        &lt;th&gt;
          &lt;div class="form-group" s&gt;
            &lt;div class="input-group"&gt;
              &lt;input type="text" value="{{password}}" class="form-control" id="password"&gt;
              &lt;span class="input-group-btn"&gt;
                &lt;div class="btn-group"&gt;
                  &lt;button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false"&gt;
                    &lt;span class="caret"&gt;&lt;/span&gt;
                  &lt;/button&gt;
                  &lt;ul class="dropdown-menu" style="min-width: auto;"&gt;
                    &lt;li&gt;&lt;a href="#"&gt;Edit&lt;/a&gt;&lt;/li&gt;
                    &lt;li&gt;&lt;a href="#"&gt;Delete&lt;/a&gt;&lt;/li&gt;
                    &lt;li&gt;&lt;a href="#"&gt;Add&lt;/a&gt;&lt;/li&gt;
                  &lt;/ul&gt;
                &lt;/div&gt;
              &lt;/span&gt;
            &lt;/div&gt;
          &lt;/div&gt;
        &lt;/th&gt;
      &lt;/div&gt;
    &lt;/tr&gt;
  </code></pre>
  
  <p>But the dropdown is partly hidden below the next row.
  <a href="https://i.stack.imgur.com/rsr2F.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rsr2F.png" alt="enter image description here"></a>
  I tried all sorts of <code>z-index</code>s in various places but its no good.
  Any idea how I can fix this? </p>