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

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

header, footer {
    text-align: center;
    padding: 10px 0;
}

h1 {
    color: #333;
}

h2 {
    color: #555;
    margin-top: 20px;
}

h3 {
    color: #666;
    margin-top: 15px;
}

p, ul {
    color: #666;
}

ul {
    list-style-type: disc;
    padding-left: 20px;
}

footer p {
    color: #777;
    font-size: 0.9em;
}