MDN’s new design is in Beta! A sneak peek:

Barf? yes, as a length, percentage or calc(); when both values are lengths, they are interpolated as lengths; when both values are percentages, they are interpolated as percentages; otherwise, both values are converted into a calc() function that is the sum of a length and a percentage (each possibly zero), and these calc() functions have each half interpolated as real numbers.

Document Tags and Contributors

 Contributors to this page: lmorchard, ethertank
 Last updated by: lmorchard,