s="box2"></div>
    <!-- Main container of the application -->
    <div class="container">
        <!-- Main heading of the application -->
        <h1>N-th Fibonacci Calculator</h1>

        <!-- Input from the user -->
        <input type="number" placeholder="Enter Number..." />

        <!-- Output showing after calculation -->
        <div id="output">
            <p id="show-output"></p>
            <h4>Formula for n-th Fibonacci Number.</h4>
            <img
                src="https://lh4.googleuse