"If a given character is a Private-Use Area Unicode codepoint, user agents must only match font families named in the font-family list that are not generic families. If none of the families named in the font-family list contain a glyph for that codepoint, user agents must display some form of missing glyph symbol for that character rather than attempting installed font fallback for that codepoint." - <a href="https://drafts.csswg.org/css-fonts-4/#char-handling-issues">css-fonts-4</a>
<h3>The first line shou