Remove Indent of First Tab on Tabs for Page Builder Widget

Hi —

I’m using the Tabs for Page Builder widget in a Visual Editor widget on my home page in the Vantage theme. The tabs are working properly, but the first tab is indented slightly. I figured out how to remove the bullet points on the tabs, but I can’t find how to remove the indent. I’d like to do this because the indented first tab doesn’t look right on a phone screen. I’m assuming I need to edit some css in the Custom CSS Editor, but I can’t figure out what I need to do.

Thanks in advance for your help.