Custom CSS box in Brunelleschi theme not working

I have tried so many custom css commands to remove spaces on my website and to remove the “home” title on my homepage, i.e. (body.home #main .entry-title {display:none;} and nothing is working!

Is anyone else having this problem with their custom css box in the Brunelleschi theme?

Anyone know how to fix this?

I’m trying to remove all the gaps of white space everywhere on my home page: https://girlsguidetowebtraffic.com/ (above nav bar, between header and body, between the two tables).

Thanks,
Angela