What class is the Button on the Levels Page

Hello,

for the love of god, i can’t figure out which class i have to point to. No matter what i do, i can’t get the font within the buttons on the Membership Level Page, both the standard font and the hyperlink font, to be black. I’ve tried hundreds of classes now and CSS Selector Plugins and none of them point to the button. Can you please tell me what Class i have to point to, to just have the font black?

And can PLEASE someone put out a in-depth cheat sheet for the CSS. PMPro does NOT take in the settings you do in Pagebuilders. No matter what i tried, it won’t accept the styling settings i do in Divi. It gets always overwritten, so i have to point reaaaaalllllyyyyyy specific to each thing i need to change. Only the “simple” p and body font is applied well, all other things do kind of their own.