So, i made a small example.
Imagine you want the title of the pricing section to be an H1 HTML tag but still look the same- h2 style heading.
First, you see on the image below, I copy paste the pricing 1 component and the HTML tag is set to heading 2 (1) and it has no style attached (2)
If I want to make the title an H1, I will have to select the title, use the small icon (1) and switch the tag to H1 (2). If the title style is not fitting my taste, I can always change the class to Heading-style-h2 (3)