Go from classic editor to blocks

Hi people!

I just finished migrating all the post and pages to blocks. All except the homepage. I’m a little bit afraid of changing things there and destroy the layout. I started trying to change a legacy widget to categories and suddenly the title acquired an enormous amount of margin or maybe padding, it became a ugly thing to look at!

So, I’m asking for help!

Please, please, is there a guide or step by step orientation on how to it? Can you point me in the right direction or tell me what to do?

Thank you and regards!

The page I need help with: [log in to see the link]