.lp-flashcard {
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 15px;
    text-align: center;
    cursor: pointer;
    user-select: none;
}
.lp-flashcard.flipped .front { display:none; }
.lp-flashcard.flipped .back { display:block; }
.front, .back { display:block; }
.back { display:none; }