Thanks for your answer! I am working on my new site, not still online. It says is a risky site, but is not risky. You could open it. Anyway, here there is a screenshot of the page and the post. The extra space in green is what i don’t want.
screen shots:
https://ceciliaarditto.com/PDF/Screen%20Shot%202021-02-04%20at%2015.37.48.png
https://ceciliaarditto.com/PDF/Screen%20Shot%202021-02-04%20at%2015.37.56.png
and the inspector
https://ceciliaarditto.com/PDF/Screen%20Shot%202021-02-04%20at%2015.56.41.png
Thanks!