mailcow/data/web/templates/admin/tab-config-customize.twig

<div role="tabpanel" class="tab-pane" id="tab-config-customize">
  <div class="panel panel-default">
    <div class="panel-heading">{{ lang.admin.customize }}</div>
    <div class="panel-body">
      <legend><i class="bi bi-file-image"></i> {{ lang.admin.change_logo }}</legend>
      <p class="help-block">{{ lang.admin.logo_info }}</p>
      <form class="form-inline" role="form" method="post" enctype="multipart/form-data">
        <p>
          <input type="file" name="main_logo" accept="image/gif, image/jpeg, image/pjpeg, image/x-png, image/png, image/svg+xml"><br>
          <button name="submit_main_logo" type="submit" class="btn btn-sm visible-xs-block visible-sm-inline visible-md-inline visible-lg-inline btn-default"><i class="bi bi-upload"></i> {{ lang.admin.upload }}</button>
        </p>
      </form>
      {% if logo %}
        <div class="row">
          <div class="col-sm-3">
            <div class="thumbnail">
              <img class="img-thumbnail" src="{{ logo }}" alt="mailcow logo">
              <div class="caption">
                <span class="label label-info">{{ logo_specs.geometry.width }}x{{ logo_specs.geometry.height }} px</span>
                <span class="label label-info">{{ logo_specs.mimetype }}</span>
                <span class="label label-info">{{ logo_specs.fileSize }}</span>
              </div>
            </div>
            <hr>
            <form class="form-inline" role="form" method="post">
              <p><button name="reset_main_logo" type="submit" class="btn btn-sm visible-xs-block visible-sm-inline visible-md-inline visible-lg-inline btn-default">{{ lang.admin.reset_default }}</button></p>
            </form>
          </div>
        </div>
      {% endif %}
      <legend>{{ lang.admin.app_links }}</legend>
      <p class="help-block">{{ lang.admin.merged_vars_hint }}</p>
      <form class="form-inline" data-id="app_links" role="form" method="post">
        <table class="table table-condensed" style="white-space: nowrap;" id="app_link_table">
          <tr>
            <th>{{ lang.admin.app_name }}</th>
            <th>{{ lang.admin.link }}</th>
            <th>&nbsp;</th>
          </tr>
          {% for row in app_links %}
            {% for key, val in row %}
              <tr>
                <td><input class="input-sm input-xs-lg form-control" data-id="app_links" type="text" name="app" required value="{{ key }}"></td>
                <td><input class="input-sm input-xs-lg form-control" data-id="app_links" type="text" name="href" required value="{{ val }}"></td>
                <td><a href="#" role="button" class="btn btn-sm btn-xs-lg btn-default" type="button">{{ lang.admin.remove_row }}</a></td>
              </tr>
            {% endfor %}
          {% endfor %}
          {% for app in mailcow_apps %}
            <tr>
              <td><input class="input-sm input-xs-lg form-control" value="{{ app.name }}" disabled></td>
              <td><input class="input-sm input-xs-lg form-control" value="{{ app.link }}" disabled></td>
              <td>&nbsp;</td>
            </tr>
          {% endfor %}
        </table>
        <p><div class="btn-group">
          <button class="btn btn-sm btn-xs-half visible-xs-block visible-sm-inline visible-md-inline visible-lg-inline btn-success" data-action="edit_selected" data-item="admin" data-id="app_links" data-reload="no" data-api-url='edit/app_links' data-api-attr='{}' href="#"><i class="bi bi-check-lg"></i> {{ lang.admin.save }}</button>
          <button class="btn btn-sm btn-xs-half visible-xs-block visible-sm-inline visible-md-inline visible-lg-inline btn-default" type="button" id="add_app_link_row">{{ lang.admin.add_row }}</button>
          <div class="clearfix visible-xs"></div>
        </div></p>
      </form>
      <legend data-target="#ui_texts" style="padding-top:20px" unselectable="on">{{ lang.admin.ui_texts }}</legend>
      <div id="ui_texts">
        <form class="form" data-id="uitexts" role="form" method="post">
          <div class="form-group">
            <label for="uitests_title_name">{{ lang.admin.title_name }}:</label>
            <input type="text" class="form-control" id="uitests_title_name" name="title_name" placeholder="mailcow UI" value="{{ ui_texts.title_name|raw }}">
          </div>
          <div class="form-group">
            <label for="uitests_main_name">{{ lang.admin.main_name }}:</label>
            <input type="text" class="form-control" id="uitests_main_name" name="main_name" placeholder="mailcow UI" value="{{ ui_texts.main_name|raw }}">
          </div>
          <div class="form-group">
            <label for="uitests_apps_name">{{ lang.admin.apps_name }}:</label>
            <input type="text" class="form-control" id="uitests_apps_name" name="apps_name" placeholder="{{ lang.header.apps }}" value="{{ ui_texts.apps_name|raw }}">
          </div>
          <div class="form-group">
            <label for="help_text">{{ lang.admin.help_text }}:</label>
            <textarea class="form-control" id="help_text" name="help_text" rows="7">{{ ui_texts.help_text|raw }}</textarea>
          </div>
          <hr>
          <div class="form-group">
            <p class="help-block">{{ lang.admin.ui_header_announcement_help }}</p>
            <label for="ui_announcement_type">{{ lang.admin.ui_header_announcement }}:</label>
            <p><select multiple data-width="100%" id="ui_announcement_type" name="ui_announcement_type" class="selectpicker show-tick" data-max-options="1" title="{{ lang.admin.ui_header_announcement_select }}">
                <option {% if ui_texts.ui_announcement_type == 'info' %}selected{% endif %} value="info">{{ lang.admin.ui_header_announcement_type_info }}</option>
                <option {% if ui_texts.ui_announcement_type == 'warning' %}selected{% endif %} value="warning">{{ lang.admin.ui_header_announcement_type_warning }}</option>
                <option {% if ui_texts.ui_announcement_type == 'danger' %}selected{% endif %} value="danger">{{ lang.admin.ui_header_announcement_type_danger }}</option>
              </select></p>
            <p><textarea class="form-control" id="ui_announcement_text" name="ui_announcement_text" rows="7">{{ ui_texts.ui_announcement_text }}</textarea></p>
            <div class="checkbox">
              <label>
                <input type="checkbox" name="ui_announcement_active" class="form-check-input" {% if ui_texts.ui_announcement_active == 1 %}checked{% endif %}> {{ lang.admin.ui_header_announcement_active }}
              </label>
            </div>
          </div>
          <hr>
          <div class="form-group">
            <label for="ui_footer">{{ lang.admin.ui_footer }}:</label>
            <textarea class="form-control" id="ui_footer" name="ui_footer" rows="7">{{ ui_texts.ui_footer }}</textarea>
          </div>
          <button class="btn btn-sm visible-xs-block visible-sm-inline visible-md-inline visible-lg-inline btn-success" data-action="edit_selected" data-item="ui" data-id="uitexts" data-api-url='edit/ui_texts' data-api-attr='{}' href="#"><i class="bi bi-check-lg"></i> {{ lang.admin.save }}</button>
        </form>
      </div>
    </div>
  </div>
</div>