openproject/app/views/timelines/_chart_container.html

 <div timeline ng-class="{timeline: true, 'tl-under-construction': underConstruction}">
  <div class="tl-left">
    <div class="tl-left-top tl-decoration"></div>
    <div class="tl-left-main">

      <table class="tl-main-table" ng-hide="timeline.options.hide_chart">
        <thead>
          <tr>
            <th class="tl-first-column" ng-style="{height: timeline.decoHeight()}">{{I18n.t('js.timelines.filter.column.name')}}</th>
            <th ng-repeat="key in timeline.options.columns">
              {{I18n.t('js.timelines.filter.column.' + key)}}
            </th>
          </tr>
        </thead>

        <tbody ng-include="'/templates/timelines/tree.html'" />
      </table>

    </div>
  </div>
  <div class="tl-right">
    <div class="tl-right-top tl-decoration"></div>
    <div class="tl-right-main"></div>
  </div>
  <div class="tl-scrollcontainer">
    <!--div class="tl-decoration"></div-->
    <div class="tl-chart"></div>
  </div>
  <div class="tl-tooltip fade above in">
    <div class="tl-tooltip-inner"></div>
    <div class="tl-tooltip-arrow"></div>
  </div>
</div>