Bootstrap css file is not working

bootstrap css file is not working in my html page github https://github.com/Rohit-1604/fitness.git.
As a beginner i do not have much knowledge how to solve it.

Hi @Rohit-1604, next time remember to also provide a link to the GH Pages website:

https://rohit-1604.github.io/fitness/

I’ve looked at your website using Google’s built-in developers’ tool and indeed it reports 14 "404 " errors (resources can’t be found) for the CSS and JavaScript files.

E.g., line 353 of index.html:

    <script src="node_modules/popper.js/dist/umd/popper.min.js"></script>

the JS script is not found in the website:

… although the path seems correct according to the website repository:

Similarly, the bootstrap-social.css stylesheet is unreachable on the website (although the path seems correct):

I’m not quite sure why this is (and am quite curious about it), but I noticed that you didn’t add the .nojekyll (empty) file in the repository root, which is required to tell GitHub Pages that it’s a static HTML website (and not a Jekyll website), so you might want to try creating and adding that file first.

Also, note that the repository contains a misspelled .gtitignore file (instad of .gitignore) — which, seems to be designed to exclude the node_modules/ folder (although the pattern doesn’t match correctly):

node_modules

so you might want to either fix or delete the misspelled .gtitignore file.