What is the best practice for organizing the site structure?

Question

css

What you need to read about the correct structuring of the site?
For example, I want to describe 10 cats, the cats differ in description and picture, i.e. the site will have the same header, menu, footer and various cats. Based on what considerations to solve the following questions:
a) do one page or 11?
b) if 11, then the cat pages should duplicate the same blocks of the main page or only different ones with their output in the block on the main page?

Answer 1

Make a collage of pictures of cats, and when you hover over them, a pop-up table with a description. Success is guaranteed.

Answer 2

Separate landing page for each cat! With its unique design and animation!