body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px 30px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 10px;
}
h1, h2 {
    color: #007BFF;
}
h3 {
    color: #555;
}
a {
    color: #007BFF;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
ul {
    padding-left: 20px;
}