scss: Fix undefined variables.
scss: Fix undefined variables.

Search & replace got a bit trigger-happy here.

The previous commit should ensure this is caught by 'npm run test' and,
by extension, the CI tests.

cised-ca/se-dir-frontend-react,chimo/se-dir-frontend-react,chimo/se-dir-frontend-react,cised-ca/se-dir-frontend-react