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

header {
    background-color: #333;
    color: white;
    padding: 10px 0;
    text-align: center;
}

h1 {
    margin: 0;
}

section {
    margin: 20px;
    padding: 20px;
    background: white;
    border-radius: 5px;
}

h2 {
    border-bottom: 2px solid #ccc;
    padding-bottom: 10px;
}

h3 {
    color: #333;
}

.code-block {
    background: #f4f4f4;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}

pre {
    margin: 0;
    overflow-x: auto;
}

code {
    display: block;
    white-space: pre-wrap;
}

button {
    padding: 10px 20px;
    background-color: green;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 10px;
}

button:hover {
    background-color: darkgreen;
}