Over run 'submit' button

Can anybody here tell me why Dillo renders the 'Go' button full form 
width on my page here:

https://linicks.net/cdn1/

(forget the iFrame and other stuff).

It renders nice and small in other browsers [ Go ], but no matter what I 
try, the 'Go' button runs the full distance:
[Go                              ].

Dillo reports no errors on the source.

Thanks,

Nick
-- 
Gosh that takes me back... or is it forward?  That's the trouble with
time travel, you never can tell."
		-- Doctor Who "Androids of Tara"