title: Hiding a button using jQuery
body: <p>Please help me to hide the button using jQuery or css.</p>
  
  <pre><code>    &lt;div align="center"&gt;
          &lt;div class="popup-content"&gt;
              &lt;div class="content"&gt;
              &lt;/div&gt;
           &lt;/div&gt;
          &lt;button onclick="window.close();"&gt;Close&lt;/button&gt; 
       &lt;/div&gt; 
  </code></pre>