old_contents: import React, { Component } from 'react';
  import GuitarChord from 'react-guitar-chords';
  import './App.css';
  
  class App extends Component {
    render() {
      return (
        <div className="App">
          <GuitarChord
            frets={['x', 3, 2, 0, 1, 0]}
            chordName="C Major"
          />
          <GuitarChord
            frets={[6, 'x', 7, 7, 5, 5]}
            chordName="Bbmaj7#11"
          />
        </div>
      );
    }
  }
  
  export default App;
  
new_contents: import React, { Component } from 'react';
  import GuitarChord from 'react-guitar-chords';
  import './App.css';
  
  class App extends Component {
    render() {
      return (
        <div className="App">
          <GuitarChord
            frets={['x', 3, 2, 0, 1, 0]}
            chordName="C Major"
          />
          <GuitarChord
            frets={[6, 'x', 7, 7, 5, 5]}
            chordName="Bbmaj7#11"
          />
          <GuitarChord
            frets={['x', 0, 2, 4, 2, 0]}
            chordName="Amaj9"
          />
        </div>
      );
    }
  }
  
  export default App;
  
subject: update demo site