I have created one repository on GitHub and hosted it with the help of the GitHub page. My issue is that if I have put all code (CSS, JavaScript code) in HTML then it works, but if I have created another folder of CSS and JavaScript, and saved the path in HTML, then it's not working. I don't understand why.

For example, you create one simple hello world website and try code from this condition.

Repository link: Aj Zero Coding

Website link: Aj Zero Coding

Output link: Project (I want this output).