SCSS import deprecation warning in embed generator

[johndhancock]

DEPRECATION WARNING on line 1, column 8 of /Users/johnhancock/Desktop/interactives/working/editing/embed_child-immigrant-map/src/sass/styles.scss:
Including [12:07:14] .css files with @import is non-stFinished 'html' after 90 ms
andard behaviour which will be removed in future versions of LibSass.
Use a custom importer to maintain this behaviour. Check your implementations documentation on how to create a custom importer.