Tooltip
      Keyboard Expectations
      
  
    - ESC = Dismisses tooltip
 
      Focus Expectations
      
  
    - Focus stays on tooltip trigger while the tooltip is displayed.
 - If the tooltip is invoked when the trigger receives focus, then it is dismissed when it no longer has focus (onBlur). If the tooltip is invoked with mouseIn, then it is dismissed with on mouseOut.
 
      Labelling Expectations
      
- Tooltip content container has role 
tooltip - Tooltip trigger references the tooltip element with 
aria-describedby