Graham TECRIDIBLE neither do I the css is just bootstrap so I can see no way it can affect it and their is no mention of the other site in your code
and that is a generic fb share code
if i use the code with your .mobie.in domain it works fine
http://m.facebook.com/sharer.php?u=http://droidinfo.mobie.in/lab
I think the issue is on facebook itself and is linked to your domain