Fairly new to web dev so sorry if this is a silly question!
I was browsing through the codepen for the tribute page project and I noticed a font size style was applied to to the entire document using the html selector, with the intention being to make working out rem values easier. I then noticed when adding content to a h1 element and a paragraph element that the font sizes were different. I know these elements have different default styles, but I assumed declaring the font size for the entire document would override this. Should the default font sizes be overrode(?) or am I missing something?