* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
}

header {
    background-color: #f2f2f2;
    padding: 20px;
    text-align: center;
}

nav ul {
    list-style-type: none;
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

nav ul li {
    margin: 0 10px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: bold;
    padding: 5px;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #ff6600;
}

main {
    padding: 20px;
}

footer {
    /* make the footer always at the very bottom */
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
}