Reply To: Padding is creating unwanted whitespace to the right

[bochristensen]

You could use the css calc() function, like shown in this codepen (Click on edit to view the code):

http://codepen.io/rexprovo/pen/LEbdNL

https://css-tricks.com/a-couple-of-use-cases-for-calc/

Or take a look at box-sizing: https://css-tricks.com/almanac/properties/b/box-sizing/