Reduce border padding on button in header

I have a button on my wordpress site titled 'try apptive free' in my header with a 2px border around it. The border already inherits a 10px padding. I want to bring the padding down to 5px to shrink the border distance however, changing the padding movies the 'try apptive free' out of line with the logo on the left side of the header titled 'Apptive'.

Is there an easy way to change the padding to 5px without moving the button out of line with the logo?

www.allaboutcats.wordpress.com