All the text under that heading will move with it.
It saves a lot of time because you can apply consistent formatting to your headings throughout your document without having to choose the font, size, weight, shading, and borders each time you make a heading.Screen reader users will be able to skim the page by jumping from heading to heading.Screen reader users will be able to hear which blocks of text are headings and what level each heading occupies in the hierarchy of the page.Why Headings Matter Benefits to Students with Disabilities Don’t just make text big, bold, or underlined.
Create headings using Word’s styles labeled “Heading 1,” “Heading 2,” etc.