I had follow your steps and we are almost there but, got 3 issues that are the following:
1) I had test new heading style on Wpshowposts Category “Cabello” on home page but, it seems that content listing on that category has dissapear as you can see => [URL redacted as requested by user]
2) Border lines on the side are not showing and should show between category name, is it possible to put instead border lines on pink that show in other post listings in category like for example Cuidado Corporal, Cuidado Facial, Salud, etc
3) On Homepage on popular posts widget it seems to be broken on first image post that overlays with title and but, it seems to work fine on post listing
How can I fix this?