body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 20px;
    padding: 20px;
    background-color: #f9f9f9;
    color: #333;
}

h1 {
    text-align: center;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

h2 {
    color: #2980b9;
    margin-top: 20px;
}

h3 {
    color: #2c3e50;
}

p {
    margin: 10px 0;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    background: #ecf0f1;
    margin: 5px 0;
    padding: 10px;
    border-left: 4px solid #3498db;
}

strong {
    color: #e74c3c;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    body {
        margin: 10px;
        padding: 10px;
    }
}