How to remove empty blocks between posts in Wordpress?

Question

CMS

Good afternoon,
When adding records, an empty space often appears between them, which I do not know how to remove.
The only logical way is to start editing my theme's styles, but I'm not sure if that's the easiest or 'beautiful' option. The screenshot below shows that there is an empty space that could be used, but the entry is placed on a new line.

Answer 1

The problem was solved by a simple change of theme, I did not fix the styles.