How do I get Concise installed in a Rails 6 app? #286

I'm trying to get concise up and running on a Rails 6 app. I have parts of it working, but the grid does not work. Can anyone tell me what I'm missing?

Here's what I did.

1. Add conciss via yarn
   in my project, I ran

yarn add concise.css
yarn add concise-utils
yarn add concise-ui

2. Import concise - in javascripts/application.scss file, I added

@import "concise.css/concise";
@import "concise-utils/concise-utils";
@import "concise-ui/concise-ui";

and in my javascript/packs/application.js file, I added

require("stylesheets/application.scss")

3. Update layouts/application.html - I added this line in the head tag

<%= stylesheet_pack_tag 'application' %>

I can get some concise classes to work. <body container> works. but <h1 class="_mtl"> does not. Also

<div grid="row"> 
  <div column="10"> this is 10 columns</div>
  <div column="2"> this is 2 spaces</dvi>
</div>

does not work

bin/webpack - returns no errors.

What am I missing?