Question

Which one is better and faster? why?

using only one file for styling:

css/style.css

or

using several files for styling:

css/header.css
css/contact.css
css/footer.css
css/tooltip.css

The reason Im asking it is that im developing a site for users who have very low internet speed. country uganda. So I want to make it as fast as possible.

Answer 1

Using a single file is faster because it requires less HTTP requests (assuming the amount of styles loaded is still the same).

So it’s better to keep it in just one file.
Separating CSS should only be done if you want to keep for example IE specific classes separate.