I really wanted to costumize css on my pop up box that I created from lead flow creator, but i don't understand how. The image that lead flow creator let me use is too small. I can't change the overlay color and the form background color can't be changed.
Is any other way to add css style in this kind of pop up Box?
Long answer: LeadFlow has a limited number of options to customize its look and feel but you can definitely modify what you're after as long as you have to dig deeper in to the code and apply CSS from there.