lib/assets/s3_ios_html_template.erb

<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Install <%= title %></title>
  </head>
  <body>
    <style type="text/css">
      * {
        font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
        text-align: center;
        background-color: #f5f5f5;
      }
      h1 {
        margin-bottom: 0px;
      }
      h2 {
        margin-top: 5px;
      }
      .oneRow {
        width: 100%;
        overflow: auto;
        overflow-y: hidden;
        white-space: nowrap;
        text-align: center;
      }
      .download {
        margin: 30px;
        font-size: 130%;
      }
      #appIcon {
        -webkit-border-radius: 22.544%;
        -moz-border-radius: 22.544%;
        -ms-border-radius: 22.544%;
          border-radius: 22.544%;

        margin-bottom: 30px;
      }
      a {
        text-decoration: none;
        color: blue;
      }
      a:hover {
        text-decoration: underline;
      }
      #os-message {
        text-align: center;
        color: #737373;
        font-size: 14px;
      }
      #footnote {
        color: #737373;
        font-size: 14px;
      }
      #finished { display: none; }
      #fastlaneLogo {
        text-align: center;
        max-width: 150px;
        margin-top: 10px;
      }
    </style>

    <h1 style="text-align: center;"><%= title %></h1>
    <h2><%= bundle_version %> (<%= build_num %>)</h2>
    <p><em>Built on <%= Time.now.strftime('%a, %e %b %Y %H:%M %p') %></em></p>

    <div class="oneRow">

      <span class="download" id="ios">
        <a href="itms-services://?action=download-manifest&url=<%= url_encode(plist_url) %>" id="text" class="btn btn-lg btn-default" onclick="document.getElementById('finished').id = '';">
          Install <%= title %> <%= bundle_version %> (<%= build_num %>)
        </a>
      </span>

      <span class="info">
        <p><%= release_notes %></p>
      </span>
    </div>

    <h3 id="os-message">Please open this page on your iOS device!</h3>

    <p id="finished">
      App is being installed. Close Safari using the home button.
    </p>

    <p id="footnote">
      This is a beta version and is not intended for public sharing.
    </p>
    <img src="https://fastlane.tools/assets/images/fastlane-logo-lockup.png" id="fastlaneLogo" />
  </body>
</html>