title: className did not match when using nextjs and react-jss
body: <p>I'm using nextjs with typescript and react-jss. I get the error:</p>
  
  <pre><code>Warning: Prop `className` did not match. Server: "mobileNavToggle-0-2-10" Client: "mobileNavToggle-0-2-2"
  </code></pre>
  
  <p>I think this is caused because the SSR and hydration produce different class names. This only seems to happen when I reload the page manually, not when next automatically reloads the page. How can I fix this?</p>