dl-grid">
      <div class="mdl-layout__header-row mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-cell--12-col-desktop">
        <h3><i class="material-icons">chrome_reader_mode</i> A Guestbook</h3><span>but moderated...</span>
      </div>
    </div>
  </header>

  <main class="mdl-layout__content mdl-color--grey-100">
    <div id="message-list" class="mdl-cell mdl-cell--12-col mdl-cell--12-col-tablet mdl-grid">

      <!-- Explanation card -->
      <div class="mdl-cell--4-col mdl-cell--4-col-table