<!DOCTYPE html>
<html>
  <head>
    <title>Shrine Demo</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="description" content="Shrine demo featuring multiple file uploads to S3 with Uppy" />
    <meta charset="utf-8" />

    <script src="https://unpkg.com/babel-polyfill@6.26.0/dist/polyfill.min.js"></script>
    <script src="https://unpkg.com/whatwg-fetch@3.4.1/fetch.js"></script>
    <script src="https://transloadit.edgly.net/releases/uppy/v1.21.2/uppy.min.js"></script>

    <link href="https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css" media="screen" rel="stylesheet" />
    <link href="https://transloadit.edgly.net/releases/uppy/v1.21.2/uppy.min.css" rel="stylesheet" />
    <%= assets(:css) %>
  </head>

  <body>
    <div class="container">
      <%= yield %>
    </div>

    <%= assets(:js) %>
  </body>
</html>

<!DOCTYPE html>
<html>
  <head>
    <title>Shrine Demo</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <meta name="description" content="Shrine demo featuring multiple file uploads to S3 with Uppy" />
    <meta charset="utf-8" />

    <script src="https://unpkg.com/babel-polyfill@6.26.0/dist/polyfill.min.js"></script>
    <script src="https://unpkg.com/whatwg-fetch@3.4.1/fetch.js"></script>
    <script src="https://transloadit.edgly.net/releases/uppy/v1.21.2/uppy.min.js"></script>

    <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" media="screen" rel="stylesheet" />
    <link href="https://transloadit.edgly.net/releases/uppy/v1.21.2/uppy.min.css" rel="stylesheet" />
    <%= assets(:css) %>
  </head>

  <body>
    <div class="container">
      <%= yield %>
    </div>

    <%= assets(:js) %>
  </body>
</html>

Update Bootstrap to 4.5.2 in demo app
Update Bootstrap to 4.5.2 in demo app
