.shake-card {
    width: 200px;
    height: 300px;
    background-color: #eff4f7;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease;
}