Support CSS Layers about formie HOT 5 CLOSED

I've actually had zero experience with CSS Layers so far, so I'll have to do some reading and check browser compatibility!

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Been using it for a while, just in the one specific way - I believe it'd be just "wrap your existing CSS in a named layer", but yeah... not 100% confident on that.

For example, my initial CSS has

@layers reset, default, design, utilities;

Which sets the order that they apply in, and specificity between them doesn't matter. Whichever layer was last declared in that list wins regardless.

So ideally, if Formie came wrapped in one named formie I'd set my own CSS layer order as

@layers reset, formie, default, design, utilities

So your code is loaded with less priority than my own code, meaning I could easily over-write it from any of my later layers (default, design, utilities).

https://caniuse.com/css-cascade-layers

from formie.

I've just added this as a plugin setting for the next release, to allow it as an opt-in setting while we continue to test it a bit more.

To get this early, run composer require verbb/formie:"dev-craft-5 as 3.0.0-beta.15".

Then, add 'useCssLayers' => true, to your configuration file.

from formie.

Added in 3.0.0-beta.16

from formie.

Agh, sorry - missed that update; great stuff, thanks!

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