➋

    <div class="jumbotron"> 
           <div class="container">
            <h1 class="display-3">${greeting}</h1>
        </div>
    </div> 

➌

    <div class="container"> 
        <div class="text-center">
            <h3>${strapline}</h3>
        </div>
    </div> 

➍

    <footer class="container"> 
        <hr>
        <p>&copy; WebMarket</p>
    </footer> 

</body>
</html>