When Firefox renders a button, by default it adds 2px of padding inside the button. (See [this StackOverflow post](http://stackoverflow.com/questions/5517744/remove-extra-button-spacing-padding-in-firefox).) Add a browser detect for this scenario.
When Firefox renders a button, by default it adds 2px of padding inside the button. (See this StackOverflow post.)
Add a browser detect for this scenario.