Are you looking to customize your Gutenberg blocks to your exact specifications? No problem! Block Styles allows you to customize any content block with your own CSS.
- Rather write your CSS by hand?
- Want to do something more advanced?
To make things easier, add your own class and/or id to the Settings Tab -> Advanced Menu for advanced targeting in Block Styles’ Custom CSS tool.
You could target with whatever the system assigned but adding your own classes or ID makes things easier for advanced targeting and for when you come back 6 months later to make changes.
Right now it’s best to use a child-theme or add your CSS to the customer if your theme is still leveraging it.