Change size of textbox in interactive video
I have a question concerning the activicty "interactive video":
I want to add text interactions that open once you click the button.
My problem: I want to change the size of the textbox that appears when you click the button, but don't find any settings to do that.
I know that it is possible to change the textboxes that open with popup.
Is there a possibility to do the same with button-textboxes?