If you want to use the same exact base value on large chunks of content, or if you want to make a whole block interoperable with multiple bases. You can use single value -em classes for that. It results on a calc() function that inherits the base value from it's root and defaults to your base value defaultBase on your plugin config.

"The only way to do great work is to love what you do."

Steve Jobs Co-founder, Apple

This one works dinamically too with the same code! Wohoo