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

header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em 0;
}

nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

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

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em 0;
    position: absolute;
    bottom: 0;
    width: 100%;
}