It’s definitely not a Cross Browser issue as I am using Mac, and looking at your site in Chrome, Firefox, Safari, and Opera and they all look the exact same. I could post a screenshot for each one, but it will look exactly like the images I have above. I’m running the latest version of Maverick on all of my macs – Macbook Pro, Macbook Air, iMac, iPad.
Also, I am able to see every change that you’re adding to the css. I’m not sure why it’s not showing up for you. The only thing I can think of is your browser cache. Do you have any caching plugins active?
If there is anyone else out there reading this, can you post a quick screenshot of what you see when visiting his site?