body {
    font-family: 'Arial', sans-serif;
    background-color: white;
    color: #333;
}

header {
    background-color: #0055cc;
    color: white;
    font-size: 2em;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    background-color: #ffffff;
}

nav ul li {
    margin: 0 20px;
}

nav ul li a {
    color: #0055cc;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

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

footer {
    text-align: center;
    color: #999;
    font-size: 0.9em;
}