body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}
header {
    background: #004a99;
    color: white;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
header img {
    margin-left: 10px;
}
nav a {
    color: white;
    margin: 0 10px;
    text-decoration: none;
}
main {
    padding: 20px;
}
footer {
    background: #f1f1f1;
    text-align: center;
    padding: 10px;
    margin-top: 30px;
}