Free HTML templates support (Energen)

Hello,
can anybody tell were I can find support for HTML templates?
I’m using Energen template and I’m having trouble with hero image size on main page.
I would like to change its height because this given with template is to high for my project, I would like to resize it to about 75% current altitude.
Any suggestion will be helpful.

Hi Annabe

Let me see it first, please provide url of your project.
Also, please consider since this is raw HTML templates they are provided as is, just with basic HTML knowledge you will be able to fix any problems