* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-5px);
}

.card-content {
    padding: 2rem;
    text-align: center;
}

.card h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.buy-button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 5px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.buy-button:hover {
    background-color: #2980b9;
}