Customize the icons for pivot table

You can customize the pivot button icons in the pivot table by overriding the class .pivot-button with a custom property content as mentioned below.

<style>
#PivotView_PivotFieldList .e-icons.e-toggle-field-list::before {
    content: '\e337';
}
</style>

In the below sample, pivot table is rendered with a customized pivot button icons.