Tagg the Builder saysSet <meta charset="utf-8"> first thing in the head so every character — accents, symbols, emoji — decodes correctly.
A charset tells the browser how to turn the file's bytes back into characters. UTF-8 covers every language and symbol, and it's the web standard. Declare it as the very first thing in the head: <meta charset="utf-8">.
If the declaration is missing or wrong, accented letters and emoji turn into garbage ("mojibake"). Save your file as UTF-8 in your editor too — the meta tag and the actual file encoding must agree.