Hm, looks like those styles were deactivated a while back. I guess that means you have to use your browser's zoom function until we've had time to look into the reasons and whether they can be fixed or not.
Just a heads up, you might want to prepare to update this soon. It suffers from no-progress bug that is currently under rapid debugging. Scheduled to be fixed on May 1st at 22:00 JST.
It's out, update please. 聖騎士リアナ to v3.5