Even when you're supporting older versions of IE (like IE 8 minimizing) that do not dependably recognize HTML5, you shouldn't hesitate to make use of semantically correct HTML tags.
Ọbụna ma ọ bụrụ na ị na-akwado nsụgharị nke IE (dịka IE 8 na nke nta) nke na-enweghị ike ịmatakwu HTML5, ị ga-atụ egwu iji iji ihe ederede HTML.