Image text wrapping not working in IE or Firefox

Hello, I have an odd probably simple problem that I just can’t seem to get figured out. The site is here: https://www.help4wildlife.com This is a scratch built theme by me that I’ve used similar variations of on many other sites and never ran into this problem.

The text on the home page wraps around the image of the deer perfectly fine in Chrome and Safari, but it doesn’t in Firefox or IE?? I do have the required css in my style sheet. It usually goes off without a hitch.. not sure why this one isn’t working? I’d love to just blame it on IE as that’s usually the culprit, but it’s Firefox too…

Thanks much for any help or advice..