Showing theme styles in backend in addition to the frontend.

[paaljoachim]

Right now theme CSS will not show in the backend only on the frontend. Here are some tips to adjust this..

https://wp.zacgordon.com/2017/12/26/how-to-add-javascript-and-css-to-gutenberg-blocks-the-right-way-in-plugins-and-themes/

https://pascalknecht.ch/gutenberg-quick-tips-01-editor-styles/

Here is the thread in the core-editor channel on slack:
https://wordpress.slack.com/messages/C02QB2JS7/convo/C02QB2JS7-1544167866.483000/