Custom styled website not showing up on git-hub

Hey guys I have built a website which has custom css and has its own index page but for some reason it is pulling the default minima site and variables from config.yml and displaying there. When I serve the site locally everything is fine. But the same is not reflecting when I host on GH pages. Please help to solve these issues

Maybe the _config.yml file still has the default theme setup (theme: minima)?

It is hard to debug without seeing the code. Could you post a link to the site’s Github repository? Or post a copy of the _config.yml file?