body {
    background-color: #f8f9fa;
}

#game-board {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    gap: 10px;
}

.card {
    width: 100px;
    height: 100px;
    background-color: #007bff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #fff;
    cursor: pointer;
    border-radius: 8px;
	user-select: none;
	
	font-feature-settings: 'liga' 0;
}

.card.flipped {
	background-color: #28a745;
}

.card.active {
	background-color: #6a5acd;
}