Heading 7

Hi! I know this might be a stupid question, but is it possible to add more headings like instead of only heading 1 to 6, I want to add 7 and more?

The thing is, I want to keep Headings 1 to 6 – the basic formatting. But, I also want to customise some headings for specific posts. Right now, on my theme, I have a CSS for h2. So everytime I have a post, I would manually write an inline CSS.

I just want to know if it’s possible. Otherwise, I won’t push. Haha.