I am currently making a website for my college project and I want to make it as good as possible. I basically want to have several HTML pages for my website which I have setup but I want to use only the one CSS page. So basically if I edit one page, for example my second page, how do I change the look of it without editing any of the CSS for my first page. I have tried several things but I honestly have no idea.

Any help is appreciated and thank you in advance.