title: How do you add multiple elements to Material-UI's AppBar component?
body: <p>I want to have multiple FlatButton components in the Material-UI AppBar and preserve the style, so it looks like this (with multiple buttons).</p>
  
  <p><a href="https://i.stack.imgur.com/AyOLr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/AyOLr.png" alt=""></a></p>
  
  <p>However, when I try to add multiple FlatButton components, I get an error saying I need to wrap them in an enclosing tag. I've used both a span and a div with the same bad results.</p>
  
  <p><a href="https://i.stack.imgur.com/5dQcO.png" rel="noreferrer"><img src="https://i.stack.imgur.com/5dQcO.png" alt="enter image description here"></a></p>
  
  <p>Is there a way to either preserve the AppBar's style in the enclosing tag or a different way to add multiple elements to the AppBar itself to get the desired effect?</p>