trilium/src/views/dialogs/branch_prefix.ejs

<div id="branch-prefix-dialog" class="modal fade mx-auto" tabindex="-1" role="dialog">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title">Edit branch prefix</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        <div class="form-group">
          <label for="branch-prefix-input">Prefix: </label> &nbsp;
          <input id="branch-prefix-input" style="width: 20em;"> - <span id="branch-prefix-note-title"></span>
        </div>
      </div>
      <div class="modal-footer" style="display: flex; justify-content: space-between;">
        <button class="btn btn-p`rimary btn-sm">Save</button>

        <button class="btn btn-sm" type="button" data-help-page="Tree-concepts#prefix">
          <i class="glyphicon glyphicon-info-sign"></i> Help
        </button>
      </div>
    </div>
  </div>
</div>