body {
    font-family: Arial, sans-serif;
    color: #333333;
    background-color: #f9f9f9;
    margin: 30px;
}

h1 {
    color: green;
}

h2 {
    color: darkgreen;
}

p {
    font-size: 16px;
    line-height: 1.6;
}

.circle-list {
    list-style-type: circle;
}

.square-list {
    list-style-type: square;
}

ul ul {
    list-style-type: disc;
}

img {
    display: block;
    margin: 15px 0;
    border: 2px solid #555;
    border-radius: 8px;
}

ol {
    margin-bottom: 20px;
}