body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background-color: #f0f8ff;
    color: #333333;
}

h1, h2, h3 {
    color: #005500;
    text-align: center;
    font-weight: normal;
    margin: 20px 0;
}

a {
    color: #0044cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.concert-banner {
    background-color: #e0ffe0;
    border: 2px solid #007700;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 15px;
    margin: 20px 0;
}

.ticket-button {
    display: inline-block;
    background-color: #88cc88;
    border: 1px solid #006600;
    color: white;
    padding: 10px 20px;
    text-align: center;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.ticket-button:hover {
    background-color: #66bb66;
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    h3 {
        font-size: 18px;
    }
}