body {
    font-family: 'Times New Roman', Times, serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #f9f9f9;
    color: #333;
}

header {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 1.5em 0;
}

main {
    margin: 20px auto;
    padding: 20px;
    max-width: 800px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

 h2, h3 {
    color:black;
}

section {
    margin-bottom: 20px;
}

ul {
    margin-left: 20px;
}

li {
    margin-bottom: 8px;
}

code {
    background-color: #f4f4f4;
    padding: 2px 4px;
    border-radius: 4px;
    font-family: 'Times New Roman', Times, serif;
}

pre {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Times New Roman', Times, serif;

}