body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #f2f2f2;
    padding: 10px;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    overflow: hidden;
    background-color: #333;
}

nav li {
    float: left;
}

nav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

nav li a:hover {
    background-color: #111;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 20px;
}

h1, h2 {
    color: #333;
}

footer {
    background-color: #f2f2f2;
    padding: 10px;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
}