body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #e9ecef;
    font-size: 20px;
}
h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 20px;
}
h2 {
    color: #27ae60;
    border-bottom: 2px solid #bdc3c7;
    padding-bottom: 5px;
    margin-top: 20px;
}
.container {
    max-width: 800px;
    margin: auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}
ul {
    list-style-type: square;
    margin: 15px 0;
    padding-left: 20px;
}
p {
    margin: 10px 0;
    color: #34495e;
}
footer {
    text-align: center;
    margin-top: 30px;
    color: #7f8c8d;
}
@media (max-width: 600px) {
    body {
        padding: 10px;
    }
    .container {
        padding: 20px;
    }
}