The semantics are only suggestions, not hard and fast rules. If you aren't adding top nav sections or site-wide footers, your current approach is fine. If you

The semantics are only suggestions, not hard and fast rules. If you aren't adding top nav sections or site-wide footers, your current approach is fine. If you do want to experiment with those, you'll find the (correctly-constrained!) body content looks funny with copyright footers floating in space somewhere to the left or right of the main text.