Cannot get css file

[0x-KChau]

How can I modify the skel.min.js to load the static css file?
Since the skel.min.js only look for the parent url and append child file. It works fine when the url route is "//localhost:3000/exampleproject". However when the url is "//localhost:3000/exampleproject/project1/testing", the skel.min.js fail to load the public folder css file.
Please advise.
Many thanks