body {
    font-family: Arial, sans-serif;
    margin: 2em;
    background: #f9f9f9;
    color: #222;
}

header {
    text-align: center;
    margin-bottom: 2em;
}

h1 {
    color: #2c3e50;
}

main {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 2em;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

a {
    color: #2980b9;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    margin-top: 2em;
    color: #888;
    font-size: 0.9em;
}