.info .date, .ss-social-button { display: none; }

Your set up video should less than 5 minutes. It should explain the clues (not just the answers but the logic behind each clue and how that translates to a combination). The Set-up video should be uploaded to YouTube and be unlisted so that students can't google for the answers to your game.

.info .date, .ss-social-button { display: none; }