Debut theme automatically styles my buttons with background color, padding, and border.

[Mirokuwu]

Debut theme applies styles to any <button> I add to the site

Can you help me find the part of the liquid I need to edit to make buttons non-styled?

[diego_ezfy]

You don't need to necessarily edit the Liquid files, yes the CSS files.

You'll have to create a custom CSS class for your button.