body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px 40px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    font-size: 1.2em;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-weight: bold;
}

h2 {
    margin-top: 30px;
    margin-bottom: 15px;
    color: #444;
}

.section {
    margin-bottom: 25px;
}

ul {
    margin-left: 30px;
    margin-bottom: 20px;
    padding-left: 15px;
}

li {
    margin-bottom: 12px;
    line-height: 1.5;
}

blockquote {
    border-left: 4px solid #007bff;
    margin: 15px 0;
    padding: 10px 20px;
    background-color: #f8f9fa;
    color: #555;
}

.deleted {
    text-decoration: line-through;
    color: #999;
}

.note {
    color: #dc3545;
    font-size: 0.9em;
}

.example, .note-list {
    background-color: #f8f9fa;
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.example p {
    margin-bottom: 10px;
}

footer {
    text-align: center;
    padding: 20px 10px;
    font-size: 0.9em;
    color: #777;
    border-top: 1px solid #dee2e6;
    margin-top: 30px;
}

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