title: How to customize tabs on react-bootstrap customize
body: <p>I'm using react-bootstrap from this site : <a href="http://react-bootstrap.github.io/components.html" rel="noreferrer">http://react-bootstrap.github.io/components.html</a></p>
  
  <p>And I would like to know how to custom a tabs like this one (in the tabs section):</p>
  
  <pre><code>const tabsInstance = (
    &lt;Tabs defaultActiveKey={2}&gt;
      &lt;Tab eventKey={1} title="Tab 1"&gt;Tab 1 content&lt;/Tab&gt;
      &lt;Tab eventKey={2} title="Tab 2"&gt;Tab 2 content&lt;/Tab&gt;
      &lt;Tab eventKey={3} title="Tab 3" disabled&gt;Tab 3 content&lt;/Tab&gt;
    &lt;/Tabs&gt;
  );
  
  ReactDOM.render(tabsInstance, mountNode);
  </code></pre>
  
  <p>I want to add a cross button to close it but I didn't find how to do that. Can you help me please ?</p>