chromium/chrome/browser/resources/chromeos/healthd_internals/line_chart/menu.html

<style include="healthd-internals-shared">
  #menu {
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  #actionButtonsContainer{
    display: flex;
    justify-content: center;
    flex-direction: column;
  }

  cr-button {
    width: 100%;
  }

  #dataButtonsContainer {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: auto;
  }

  .line-chart-menu-button {
    align-items: center;
    cursor: pointer;
    display: flex;
    flex-grow: 1;
    line-height: 1.5em;
    padding: 10px 10px 10px 10px;
    user-select: none;
  }

  .line-chart-menu-button-inner-span {
    text-align: center;
    white-space: nowrap;
    width: 100%;
  }
</style>
<div id="menu">
  <div id="actionButtonsContainer">
    <cr-button class="action-button" on-click="onEnableAllButtonClick">
      Enable All
    </cr-button>
    <cr-button class="cancel-button" on-click="onDisableAllButtonClicked">
      Disable All
    </cr-button>
  </div>
  <div id="dataButtonsContainer"></div>
</div>