How would I apply CSS to a specific popup? I've tried following other posts on the community, but have had no luck. Secondly, what is the best approach to editing the element.style attribute? I am trying to modify the "min-height" property of the popup below.
When you configure the pop-up in the page builder, add a wrapper inside the popup. It looks like you have a button set inside your pop-up. Include your button set or any other component inside the wrapper like this:
Click on the wrapper component to edit the Style Attributes of the wrapper, like Size -> Min Height, and it will change the CSS properties of the popup.