body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 20px;
    max-width: 900px;
    padding: 20px;
    background-color: #f4f4f4;
}

h1 {
    color: #333;
    border-bottom: 3px solid #007acc;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

a {
    color: #007acc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

b, strong {
    color: #333;
}

p {
    margin: 15px 0;
}

ul {
    margin: 10px 0;
    padding-left: 20px;
}

li {
    margin: 8px 0;
}

ul ul {
    margin-top: 5px;
    padding-left: 25px;
}

ul ul li {
    color: #555;
    list-style-type: circle;
}