By mistake, I updated this file to customize css. D:\Continuum\Anaconda2\Lib\site-packages\notebook\static\custom\custom.css
To rollback the above change, 1) I put back the original file that I saved before. still the new css shows up in jupyter.
2) I removed all .ipython and .jupyter dir and it didn't work either.
3) I even uninstalled anaconda and still that css shows up.
I'm really stuck here. Does anyone know how to go back to the default css of jupyter ?
Reposting as an answer:
When your changes don't seem to be taking effect in an HTML interface, browser caching is often a culprit. The browser saves time by not asking for files again. You can: