I have made a portfolio, which I tried tried uploading on github pages. But the content is horribly distorted, none of the css are working properly, every thing is overlapping one another.
I have made it responsive and it worked fine in chrome.
What can be the problem?
UPDATE: PROBLEM FIXED.
As @SkyC suggested, after changing every http:// to https:// in the links inside the <head> tag, my problem was resolved. Thanks a ton!
Here is my portfolio: https://swagnikdutta.github.io/portfolio/
Thank you 
that solved the issue. That is my old portfolio, I have made a fresh one now (see update)