If you don’t come from a web design background, you may find some of the terms and phrases used in Blocs confusing. A common point of confusion is surrounding text heading levels and why there are six different levels to choose from.
Understanding heading levels
Search engines such as Google use the headings to index the structure and content of your web pages. Level 1 headings should be used for main headings on your page (usually found at the top of your page), followed by level 2 sub-headings, then the less important level 3 headings are used throughout further down your page, and so on.
The lower the heading level the more important search engines treat them and the key words they contain.