devportal-8.x-2.0-alpha10/modules/guides/guides.libraries.yml

menu:
  version: 1.0
  css:
    theme:
      css/guides.menu.css: {}

guide:
  version: 1.0
  css:
    theme:
      css/guides.guide.css: {}

in_page_navigation:
  version: 1.0
  css:
    layout:
      css/guides.in-page-navigation.css: {}
  js:
    js/guides_in_page_navigation.js: {}