Big empty gap in widget area

Hello,

When I make widget box it looks like this:
There is big gap in the end of box:
https://ibb.co/x3tsPFR

My shortcode:
[askmeanythingpeople post_or_page_id=”1″ success_text=”Your question is saved and will be checked!” question_box_title=”Suggest Article” placeholder=”Didn’t found answer? Submit post idea for us!” ask_button_text=”Submit” questions_per_page=”0″ show_answers=”false” show_navigation=”false”]