Multi-purpose Block Elements

    This content is inside a list but is not inside a list item like it should be.
  1. This content is properly nested in a list item.
    2. This content outside a list item invalidates and destroys the structure of a list.
Compare the mixed content in this division with that of the preceding list.
This content is inside a nested structural division.
This mixed content is not invalid, but it destroys the block structure and requires a browser to create anonymous blocks in which to render it.