PayPal button gets scaled up 200%

Paypal button gets scaled up 200% when I use the short code to insert it into page.
If I use the cleartext button code, it works fine.
Is this something to do with my theme or how S2Member handles the short code?

Hello there,

This is something your theme is doing, s2Member does not make it that big.

Hope this helps. :)

Was resolved by adding

input[type=image] {width:auto;}

to style.css

Excellent!

Glad I was able to help. :)