Firefox 18.0.2 messing up some web pages

[sktsee]

On Fri, 08 Mar 2013 19:09:03 +0000, Colin Law wrote:

[snip]
> 
> Often when pages display differently in different browsers or versions
> it is due to invalid html, but I was surprised to find that that page
> validates fully at http://validator.w3.org/
> 

But its CSS did not:
http://jigsaw.w3.org/css-validator/validator?uri=http://georgegrantsoundhealing.com/GGSH/HOME_files/HOME.css&profile=css3&usermedium=all&warning=1&vextwarning=&lang=en#css

-- 
sktsee