body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
}

header nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    text-align: center;
}

header nav ul li {
    display: inline;
    margin-right: 20px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.2rem;
}

main {
    padding: 40px 20px;
}

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

h1, h2 {
    color: #333;
}

h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 30px;
}

h2 {
    font-size: 2rem;
    margin-top: 40px;
    margin-bottom: 20px;
}

p {
    margin-bottom: 15px;
}

ul {
    margin-bottom: 20px;
}

footer {
    text-align: center;
    padding: 20px 0;
    background-color: #333;
    color: #fff;
}