# Accordion: Nesting

These are nested accordions.

- A title with `aria-expanded="true"` has a blue border.
- A title with `aria-selected="true"` has a red border.
- An open item should have both borders.
- Manipulating one accordion shouldn't affect the other.

- Accordion 1

  Base Accordion

  - Accordion 1
    Nested Accordion
  - Accordion 1
    Nested Accordion
- Accordion 1

  Base Accordion