Link are broke when running with node static file server

Hello, I followed FCC’s Node.js course on Youtube and at the part Serving static file with http and File System Module I created an html file with links inside(JSS,CSS) but when I display the file via the server all the links are broke but if I lunch the file without the server the links work and I have my page styled. How can’t I handle it. I still can figure it out.
Thanks in advance.