Documentation HTML template for Codecanyon Application

Hello community,
Hope everything going well. I need a help about documentation HTML template.
The template suggested by codecanyon is very poor looking and for a reason, I am unable to make one for myself. Can you suggest me a good HTML documentation template that I can use in my application?

I found a template (Readthedocs) here (https://readthedocs.org/projects/template/). Can I use it? They say it’s under BSD License, and I am not sure if I can use something that is licenced under BSD License.

Thank you.