body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f9f9f9;
    padding: 20px;
}

header h1 {
    color: #f7931a; /* Bitcoin orange */
}

.cards {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

.card {
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    width: 150px;
}