Space after icons

I am using the Sunset Theme and have problems with the icons.
I only added 3 icons, with the links to the website. But when I save it it shows a lot of space between this widget and the next one.

How can I fix it?

My website to show you the problem: https://leviosa.nl

https://www.ads-software.com/plugins/simple-follow-me-social-buttons-widget/