The default starter has sass files in every page’s folder. For some reason those files aren’t compiled.
As far as I can tell the module ionic-gulp-sass-build doesn’t even intend to do so.
Is this on purpose?!
I found the answer:
“Before these custom styles will take effect, you will need to import them into the core .scss file, so if I had a component called checklist that had a checklist.scss file, I would need to add the following line to my app.core.scss file”:
@import "pages/checklist/checklist";
Source: http://www.joshmorony.com/a-guide-to-styling-an-ionic-2-application/