Fix lists style => use Customizr theme ( modern ) one about nimble-builder

@eri-trabiccolo not urgent but it would be good if you could take a look at it.
Thanks !

[eri-trabiccolo]

I don't seem to be able to reproduce this mmm

[eri-trabiccolo]

You know that I didn't absolutely get the nature of this issue?! :D
I thought it was an issue with the Customizr modern theme.

Now I got it :D

[eri-trabiccolo]

Hi @Nikeo,
so I implemented the lists style like in the Customizr-modern theme, with one exception:
I set the ul,ol margin-left from 3rem to 1.5rem, given the fact that the nimble builder will allow putting ul/ol in narrow containers.

Also, consider that the Customizr-modern lists style is pretty "specific" and, if you want, convoluted, and I'm not totally sure it should be taken as base for the nimble builder which can be used with whatever theme (so whatever layout, column and module width etc).
Probably a more simple styling (avoiding the li::before absolute positioning, the ol li counters etc.) might better suit the nimble purposes.

For this reason I've also added a "very simple" style (commented), based on the 2017 theme code, so that we can use that if we find the Customizr-modern style not versatile enough to look fine with most of the themes we're going to test.

In any case nested lists are hard to manage by default, IMHO, when you have no clue where they will be put.

OK.
I agree and I think that it might be even better to use the "conservative" code from the start, and comment the customizr like one.
Thanks