Need feedback and some help with design please

Hi, so I made this site using a template.
I would like some feedback on it please.

Also would be great if I can get some help in this regard:

  1. The CTA button is supposed to be pink and it does show as pink in design view but when i preview it, it turns black. I don’t know where it is inheriting the black from. Can’t figure out how to fix it.
  2. The page scroll is glitchy, how do I fix that.
  3. I want to add horizontal sliding carousel, how do I do that. Is there a tutorial I can watch?