body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 20px;
}

header img {
    max-width: 200px;
    height: auto;
}

nav {
    background-color: #444;
    color: white;
    padding: 10px;
}

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

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

main {
    padding: 20px;
    max-width: 800px;
    margin: 0 auto;
    flex: 1;
}

h1, h2 {
    color: #2c3e50;
}

ul {
    padding-left: 20px;
}

footer {
    background-color: #444;
    color: white;
    text-align: center;
    padding: 10px 0;
    margin-top: auto;
}