Fix hx structure + hx:first-child section
Fix hx structure + hx:first-child section

* Added display: block on classes hx (strong class="h2" will be displayed correctly by example)
* Added classes .hx:first-child for margin problems

Thnaks @7studio @iamtzi for suggestion.
nico3333fr/ROCSSTI,nico3333fr/ROCSSTI