How can I edit a 3rd party button to remove box shadow?

I’m trying to edit a button added to our products screens and have been able to locate where to change the colour and radius, I can’t find how to remove the box shadow.

I have found this coding in the sections, and specifically the button entry point I’m dealing with. Would the Box Shadow be called anything else within the coding?

Here is some of the coding within that section. Would any of these change that shadow?

data-color=“”
data-background=“#716c6c
data-glitter_disable=“”
data-width=“{{ section.settings.width }}”
data-height=“{{ section.settings.height }}”
data-border=“”
data-border_radius=“”
data-class_name=“margin-block-entry-button”
data-article_query=“”
data-onload-callback=“”
data-on-close-callback=“”
data-on-button-click=“updateVendorCode”
data-element-selector=“{{ section.settings.element_selector }}”
data-insert-element-position=“after”