Remove margin from the first hr in posts.
Remove margin from the first hr in posts.

renan-souza/renan-souza.github.io,bamos/bamos.github.io,bamos/bamos.github.io,bamos/bamos.github.io,renan-souza/renan-souza.github.io,bamos/bamos.github.io,renan-souza/renan-souza.github.io