Css not being applied on github pages

I created a simple website using Html and CSS. But, when I hosted the website, only HTML is being applied.
code: GitHub - sampad201199/Personal_Website
website: Sampad Singha

you capitalized the Foldername CSS, either link to the CSS with uppercase or rename the folder to lowercase.

URLs are Case-Sensitive


Thank you, @Medowar. It worked.