All heading styles.
You won’t be using Heading 1 on posts or pages since the post/page title is typically considered the first heading.
Heading 2 will be the most commonly used heading on posts and pages.
Heading 3 may also be a commonly used heading on posts and pages.
Heading 4 may also be used on posts and pages.
Heading 5 probably won’t be used often.
Heading 6 probably won’t be used often.
Some formatting styles.
Bold and italic text