Browser on which this bug occurs
Mozilla Firefox
Expected Behavior
<code> and <pre> elements should use a monospaced font.
Actual Behavior
<code> and <pre> use a default (usually sans-serif) font when custom fonts are disabled in browser settings.
Extra Details
Firefox allows disabling custom fonts in browser settings. However, <code> and <pre> elements on the Ghostty website only specify JetBrains Mono for font-family, which, when combined with that browser setting, results in them using the default font:

Could you consider appending the generic monospace font family to code snippets to ensure that they stay monospaced regardless of that browser setting?