<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <title>Bootstrap</title>
    <!-- Path to Framework7 Library CSS-->
    <link rel="stylesheet" href="bootstrap/css/bootstrap.css">
  </head>
  <body>
    <div id="dd_container">
        <div class="dd_snippet ui-draggable ui-draggable-handle" id="snippet_1">
            <div class="jumbotron">
                <div class="container">
                    <h1 class="dd_text">Hello, world!</h1>
                    <p class="dd_text">Click on a text or an image to start editing it. To add new snippets, click on the pencil icon on the right to open the snippets sidebar.</p>
                    <p class="dd_text"><a class="btn btn-primary btn-lg" role="button" contenteditable="true">Learn more »</a></p>
                </div>
            </div>    
        </div>
    </div>
  </body>
</html>

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <title>Bootstrap</title>
    <!-- Path to Framework7 Library CSS-->
    <link rel="stylesheet" href="bootstrap/css/bootstrap.css">
  </head>
  <body>
    <div id="dd_container">
        <div class="dd_snippet ui-draggable ui-draggable-handle" id="snippet_1">
            <div class="jumbotron">
                <div class="container">
                    <h1 class="dd_text">Hello, world!</h1>
                    <p class="dd_text">Click on a text or an image to start editing it. To add new snippets, click on the pencil icon on the right to open the snippets sidebar.</p>
                    <p class="dd_text"><a class="btn btn-primary btn-lg" role="button">Learn more »</a></p>
                </div>
            </div>    
        </div>
    </div>
  </body>
</html>

Debug content-editable true on button
Debug content-editable true on button
