Josef-Hehmann-Site-Package/Configuration/RTE/Preset.yaml

#
# import basic
#

imports:
 - { resource: "EXT:site_package/Configuration/RTE/BasicPreset.yaml" }

editor:
  config:
    #
    # add custom rte css
    #

    contentsCss:
      - "EXT:bagger_site_package/Resources/Public/Css/rte.css"

    #
    # add custom style options
    #

    stylesSet:
      - { name: "Button Hover", element: "a", attributes: { class: "btn link" } }