body {
    font-family: sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header, main, footer {
    padding: 20px;
    margin: 0 auto;
    max-width: 800px;
}

header {
    background: #333;
    color: #fff;
    text-align: center;
}

    header h1 {
        margin: 0;
    }

main {
    background: #fff;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

footer {
    text-align: center;
    padding: 10px;
    background: #333;
    color: #fff;
}

a {
    color: #333;
}

dl {
    margin: 0;
}

dt {
    font-weight: bold;
}

dd {
    margin: 0 0 10px 20px;
}