body {
    background:#f2f2f2;
    font-family:Arial;
    margin:0;
}

.header {
    background:#004c99;
    color:white;
    padding:20px;
    text-align:center;
}

.menu {
    background:#0066cc;
    padding:10px;
    text-align:center;
}

.menu a {
    color:white;
    padding:10px 20px;
    text-decoration:none;
    font-weight:bold;
}

.menu a:hover {
    background:#004c99;
}

.content {
    width:80%;
    margin:30px auto;
    background:white;
    padding:20px;
    border-radius:10px;
    box-shadow:0 0 10px rgba(0,0,0,0.2);
}