body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
}
header {
    background-color: #003366;
    color: white;
    padding: 10px;
    text-align: center;
}
img {
    max-width: 100%;
    height: auto;
}
main {
    padding: 20px;
}
ul {
    list-style: none;
    padding: 0;
}
ul li {
    margin: 10px 0;
}
footer {
    background-color: #003366;
    color: white;
    text-align: center;
    padding: 10px;
    position: absolute;
    bottom: 0;
    width: 100%;
}