Use "em" or percentages instead of pixels

As far as I can tell everyone loves and hates autolayout.

When it works, it’s magic. But it’s almost always glitchy in the wild.

I think the biggest breakthrough would be to just be able to declare an “em” or percentage for the size of everything in the layout.

Thanks for the feedback, @Michael_Staton!

We’ll pass this onto our team for consideration.