[PATCH 15/51] style.css: Provide a default <h2> style

[Finucane, Stephen]

> From: Belén Barros Peña <belen.barros.pena at intel.com>
> 
> Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
> Signed-off-by: Belén Barros Peña <belen.barros.pena at intel.com>

Nothing too complicated here.

Acked-by: Stephen Finucane <stephen.finucane at intel.com>