CSS border behaving strangely 
When i add a border to a SketchField via a CSS style page it appears 6-8 pixles inside of the SketchField on the right side. Dose anyone know why this is and/or how to fix it?
![Capture](https://user-images.githubusercontent.com/38592693/67721519-58b54580-f99c-11e9-8f68-a26e51944902.PNG)
