Block indentation using CSS classes

This is a normal paragraph with no indentation applied.

This heading has the .custom-block-indent-a class

This paragraph has the same class as the heading above, so they’re both at the same level.

But this heading has the .custom-block-indent-b class

This paragraph has the same indentation class as the heading above.

This paragraph has the .custom-block-indent-c class. This is the maximum indentation level allowed in the configuration.