External checkbox stylization

Hi,

I’m newbie in whole this wordpress/site bulding stuff, so please forgive me if my case is superstupid or ignorant.

I am using Contact Form 7 on my site and i added a shortcode to add a newsletter subscription checkbox (from external plugin – my newsletter service provider). I used Custom code plugin tu stylize Contact Form however the changes does not affect my “newsletter perrmision” chekbox. I would like to add a padding from left side and make font thiner. I will be very gratefull for all help

The page I need help with: [log in to see the link]