message: add feature to expand and collapse legend
diff: @@ -64,6 +64,15 @@ const AtomSelectorLegend: React.FC<AtomSelectorLegendProps> = ({
  } else {
  return (
  <div className="AtomSelectorLegend">
  + <button
  + onClick={() => {
  + const menu = document.querySelector('#hidden');
  + menu.classList.toggle('minimize');
  + }}
  + className="minimizeButton">
  + Visibility
  + </button>
  + <div id="hidden">
  <div>
  <span
  style={{fontSize: '14px', fontWeight: 'bold', marginTop: '10px'}}>
  @@ -79,6 +88,7 @@ const AtomSelectorLegend: React.FC<AtomSelectorLegendProps> = ({
  {selectorList}
  </div>
  </div>
  + </div>
  );
  }
  };
  