Sass Integration
Sass files can not be included to the form directly because of this they have to be compiled first to normal CSS files.
The CSS files have to be linked in the linkTag within the form definition’s header:
<link rel="stylesheet" data-hf-href="[FILENAME].css" />
Note
For detailed examples have a look at the forms provided within the formdefinitions folder of the "formDev" or on the official Docs https://sass-lang.com/