Can't login to Citi.com with Safari

This isn't a question. It is a tip.

I had been using Safari to pay all of my online bills, including my Citi credit card. One day it just stopped working. When I clicked the "Sign On" button, the only thing that would happen is the username field would change to a red background. No other activity whatsoever.

I called Citi and they had no clue. However, after much frustration and hair-pulling, I thought of trying another browser. So I loaded up Firefox and voila! It worked.

After some investigation I found the problem. Apparently some web sites don't like it if you use autologins or things that autofill your login info. I was using one. I disabled the autofill and BAM! It worked.

So if you are using autofill or autologin and it wont' work, disable it.