1. Define a language. By one way of defining things, Lashon Kodesh is a dead language, and Ivrit is a modern derivative (similar to the relationship of Latin to French, or modern American English to Middle English).
2. Fonts constantly change. Note the history of “Rashi” font (once used for popular literature, now only for serious sefarim). The writing system is independent of the language (e.g English uses the Roman alphabet, Yiddish uses the Hebrew alphabet, Farsi uses the Arabic alphabet, most ancient Mesopotamian Semitic languages used the Sumerian script).