I make a Django admin site using Django development version
But it does not have a CSS style :
Same sort of issue i encountered while developing a site in django-1.10.5 and python-2.7.13. But in my firefox-51 and chrome, the login page was able to get the css but still there was no styling. But weirdly it was working on IE-8..
I tried do every possible thing mentioned here and suitable to my set of sw versions. None worked.
But when i tried the same site on other system which had the python-2.7.8, it worked..
Just posted if it may help someone...
edited: later I found that in python-2.7.13, writing the following two lines in settings.py (plus clearing the cache of the browser) had done the trick
import mimetypes
mimetypes.add_type("text/css", ".css", True)