Web Fonts: Using Any Font You Like

A web font is a font file the browser downloads with your page, loaded with a Google Fonts link or your own @font-face rule, so every visitor sees the font you chose even when their device doesn't have it.

Updated

Cheat sheet: Web Fonts: Using Any Font You Like
Category
CSS
Level
Apprentice
Tags
@font-face, CSS, Custom font, Font fallback, Variable font