It is important to use properly structured HTML headings when organizing your web content. Think of webpage headings as a table of contents for a story.
Headings are not required on webpages. However, they help break up and organize lengthy informational webpages—improving readability. Proper heading use is not only important for accessibility, it also has search engine optimization benefits, which can help your webpages rank higher in Google’s search results.
According to the University’s editorial guide, headings are always title case, meaning you should capitalize all words that are not articles, prepositions, or to-be verbs.