Headline tags go right from h1 (being the biggest) to h6 (the smallest). These constitute as a part of HTML dom structure and are generally used for highlighting the important text. Coupled with CSS styling , the size of these tags can be varied as per requirement
Feature labels go ideal from h1 to h6. These constitute as a piece of HTML dom structure and are by and large utilized for highlighting the critical content. Combined with CSS styling , the extent of these labels can be shifted according to necessity diving equipment for sale
Heading tags are used by search engines to identify words which are more important than the rest of the page text. The theory is that headings will sum up the topic of the page, so they are counted as important keywords.