Revert "remove comments in CSS customization"

This reverts commit d7a67b4b6347647a2e99a02da25f7439021ef7d1.
Revert "Revert "remove comments in CSS customization""

This reverts commit 7ce3d095d928dc475650c36d443180d9c965cac7.
Revert 7ce3d09..5ec6583

This rolls back to commit 7ce3d095d928dc475650c36d443180d9c965cac7.