body {
    font-family: Arial, sans-serif;
    background-color: #C2CFD4;
    text-align: center;
    color: #393939;
}
.logo {
    width: 100px;
    height: 100px;
    background-color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto;
    font-size: 24px;
    font-weight: bold;
    color: #1F74B4;
}
.memory-game {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    grid-gap: 10px;
    justify-content: center;
    margin: 20px auto;
}
.card {
    width: 100px;
    height: 100px;
    background-color: #55A7CE;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: white;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.3s ease;
}
.card.flipped {
    background-color: #1F7F6F;
    transform: rotateY(180deg);
}