scinote-web/app/views/shared/_file_preview_modal.html.erb

<div id="filePreviewModal"
     class="modal modal-file-preview"
     role="dialog"
     tabindex="-1"
     aria-labelledby="filePreviewModal"
     aria-hidden="true"
     data-backdrop="static"
     data-keyboard="false">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="preview-close" data-dismiss="modal"><span class="fas fa-times"></span></button>
        <span class="file-name"></span>
        <span class="file-wopi-controls"></span>
        <a class="file-download-link" href='#'>
          <p><span class="fas fa-download"></span> <%= t('Download')%></p>
        </a>
      </div>
      <div class="modal-body">
        <div class="file-preview-container">
        </div>
      </div>
      <div class="modal-footer">
      </div>
    </div>
  </div>
</div>