Tabs
Usage Guidelines
- Use tabs to alternate between views within the same context
- Logically chunk the content behind the tabs so users can easily predict what they'll find when they select a given tab
- Use sentence case
- Use concise, plain language tab labels
Tab 1
      The tab-bar affordance
      can use shadow-dom to establish
      a styleable tab-bar and panels.
      The required parts can be exposed for styling
      with consistent pseudo-elements.
    
Tab 2
      The accordion-like collapse affordance
      also uses shadow-dom to establish
      summary-details like behavior for each section,
      with an option to make the toggle-states
      exclusive-collapse.
    
Tab 3
The fallback state is simply structured HTML, without any show/hide affordances. This does not require any special styling.