All text elements on your website are categorized as headings, paragraphs, or navigational items.
You can view the style of a particular text element by clicking on the text in question and selecting Edit text. You'll see the current style here:
You can change the text style by expanding this drop-down menu and choosing another style. You can also edit a particular style by clicking on Change text styles. For example, you can make all texts written in Heading 1 underlined and/or bold by default.
If you click on Change text styles within this dropdown, the Text styles toolbar automatically opens on the left. You can use arrows to go back to the main Styles window or open the Headings and Paragraphs & navigation settings.
It matters how your text is stylized, because:
Headings help your site visitors and search engines to read and understand texts within your website. That's why it's crucial to use your keywords in headings.
Headings define which parts of your content are important, and show how they're interconnected.
There are six levels of headings: from Heading 1 (H1) to Heading 6 (H6), with H1 being considered the most important.
Here's how you can exploit the heading hierarchy:
Use H1 for titles that should also include your main keywords.
Use H2 to break up your content into sections, using similar keywords to the H1 tag.
Use H3 to break up the content into smaller sections.
So, if you set Heading 1 as a text element's style, the text will automatically have a <h1> tag in your website's code.