I was working on a small project using html, css and javascript. When I viewed the page using VS code's live server the page worked fine but when I uploaded the project to github and hosted it on github pages the site comes out unformatted. I have to refresh the page once to load the formatting. I do not understand what the issue is but I beleive it has something to do with the loading of the javascript. Can you tell me how to resolve this issue

Site on github pages: https://abhimanyu-dev.github.io/Calculator/

Github repository link: https://github.com/Abhimanyu-dev/Calculator