body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    color: #333;
}
header {
    background: #0a3d62;
    color: #fff;
    padding: 20px;
    text-align: center;
}
nav {
    background: #1e3799;
    text-align: center;
    padding: 10px;
}
nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}
.hero {
    background: #dff9fb;
    padding: 40px;
    text-align: center;
}
.service {
    background: #fff;
    margin: 20px;
    padding: 20px;
    text-align: center;
    border-radius: 8px;
}
.service img {
    width: 120px;
    margin-bottom: 15px;
}
footer {
    background: #0a3d62;
    color: #fff;
    text-align: center;
    padding: 15px;
}