Created by: jacobmllr95
This commit adds the border width (top + bottom) to the input height variables by default. This makes IMHO much more sense because every element is set to box-sizing: border-box, so the border height should count to the total element height.
This commit introduces some handy helper functions to convert rem units to px and vice versa. This is required to calculate the total input height because the border width is defined in px and the other height related variables (padding, font-size etc.) are defined in rem.