Please help how to decrease the width of recaptcha box

Hi, Meg!

Please help how to decrease the width of the ‘I’m not a robot recaptcha’ box.

The inspect element and custom css width is not working. Would like to have a space between the box of recaptcha and the body content.

Pls view. http://www.awesomescreenshot.com/image/673660/a8729ca7b231598fb96468f54341851d

https://ww.wp.xz.cn/plugins/clean-and-simple-contact-form-by-meg-nicholas/