body {
    font-family: Arial, sans-serif;
    background: #f4f7fa;
    color: #222;
    margin: 0;
    padding: 0;
}
.header {
    background: #1a237e;
    color: #fff;
    padding: 20px;
    text-align: center;
}
.container {
    max-width: 600px;
    margin: 40px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    padding: 30px;
}
h1, h2 {
    color: #1a237e;
}
ul {
    padding-left: 20px;
}