message: fix(playground): use className instead of class
diff: @@ -3,7 +3,7 @@ import React from 'react';
  import './IconDots.css';
  export const IconDots = () => (
  - <div class="icon__dots">
  + <div className="icon__dots">
  <svg viewBox="0 0 64 64">
  <circle transform="translate(32,32)" r="6"></circle>
  </svg>
  