Revert "animate css lib for fun alerts"

This reverts commit 23b25c1ad57c109daf2583f87f14e53a9d613594.
Revert "made flashcards that flip"

This reverts commit 2ff93b8734964add47f263fd2ff88313791cbd95.
Revert "updated  article schema for 2 sided flashcard"

This reverts commit 0002530b04b3fc19df6358da14cf79944a2a77ba.