* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f7f9fc;
    color: #333;
    line-height: 1.7;
}
.container {
    max-width: 900px;
    margin: 40px auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
h1 {
    color: #1a237e;
    margin-bottom: 20px;
}
h2 {
    color: #283593;
    margin-top: 30px;
}
.footer {
    margin-top: 40px;
    font-size: 14px;
}