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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 0;
    border-bottom: 2px solid #eee;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    color: #2c3e50;
}

section {
    margin-bottom: 40px;
}

section h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.5em;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}