====== Basic Layout ======

A book structure typically includes a cover, table of contents, chapters, and an index. Here’s a Bootstrap layout example:

<code>
<div class="container">
    <header class="text-center py-5 bg-primary text-white">
        <h1>My Book Title</h1>
        <p>By Author Name</p>
    </header>
    
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
        <div class="container-fluid">
            <a class="navbar-brand" href="#">Book Navigation</a>
            <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarNav">
                <ul class="navbar-nav">
                    <li class="nav-item"><a class="nav-link" href="#introduction">Introduction</a></li>
                    <li class="nav-item"><a class="nav-link" href="#chapter1">Chapter 1</a></li>
                    <li class="nav-item"><a class="nav-link" href="#chapter2">Chapter 2</a></li>
                </ul>
            </div>
        </div>
    </nav>
    
    <main class="mt-4">
        <section id="introduction" class="py-3">
            <h2>Introduction</h2>
            <p>Welcome to this book. Here, we introduce the key concepts...</p>
        </section>
        
        <section id="chapter1" class="py-3">
            <h2>Chapter 1: Getting Started</h2>
            <p>This chapter covers the basics...</p>
        </section>
        
        <section id="chapter2" class="py-3">
            <h2>Chapter 2: Advanced Concepts</h2>
            <p>Diving deeper into the subject...</p>
        </section>
    </main>
    
    <footer class="text-center py-4 bg-dark text-white">
        <p>&copy; 2025 Book Author. All rights reserved.</p>
    </footer>
</div>
</code>