chromium/chrome/browser/resources/commerce/product_specifications/header_menu.html

<style>
  cr-action-menu {
    --cr-menu-border-radius: 12px;
  }

  cr-icon {
    --icon-size: 20px;
    --iron-icon-height: var(--icon-size);
    --iron-icon-width: var(--icon-size);
  }

  .dropdown-item {
    gap: 8px;
    padding: 0 20px;
  }
</style>

<cr-lazy-render id="menu">
  <template>
    <cr-action-menu>
      <button id="rename" class="dropdown-item" role="menuitem"
          on-click="onRenameClick_">
        <cr-icon icon="product-specifications:edit"></cr-icon>
        $i18n{renameGroup}
      </button>
      <button id="seeAll" class="dropdown-item" role="menuitem"
          on-click="onSeeAllClick_">
        <cr-icon icon="product-specifications:see-all"></cr-icon>
        $i18n{seeAll}
      </button>
      <button id="delete" class="dropdown-item" role="menuitem"
          on-click="onDeleteClick_">
        <cr-icon icon="product-specifications:delete"></cr-icon>
        $i18n{delete}
      </button>
    </cr-action-menu>
  </template>
</cr-lazy-render>