Description

I'm testing the latest master version and the pen option/custom value is still missing in all padding and size fields:

I know it's a work-in-progress version, Just want to make sure that it will be added again as the feature is used for calc functions or to set it to auto.

Steps to reproduce

• add a Div widget
• try to change the size or padding to a custom value

Expected behavior

• have the pen icon that will give you a textfield for custom input (like in the current containers)