How can I make the arrow in the popup window on the React-Leaftlet popup point a marker instead of the lower right window, as shown in the image below?

Here is my code for the popup:
<Popup>
<span>
<p>Foo</p>
</span>
</Popup>
I am using the code Popup.jsfrom the sample repository folder react-leaflet. In this class, I do not see the option to set the offset.
Even just removing this down arrow can be good enough.
Thanks,
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