ELI5: Explain Like I'm 5

Font family (HTML)

Fonts are what make text on a computer screen look different styles. HTML, which stands for Hypertext Markup Language, is a way to tell the computer what style of font to use when displaying text. Different font families are like collections of different fonts that all look similar. So if you want all your text on the page to look the same, you can pick a font family and all the text on the page will use that style.