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Swap the code font for monospace

Sets your favourite monospace font for code, diffs and code blocks across GitHub.

Code to copy

.blob-code, .blob-code-inner, .react-code-text,
.CodeMirror, pre, code, .highlight,
[class*="DiffLine"], .react-file-line {
  font-family: "JetBrains Mono", "Fira Code", "Cascadia Code", ui-monospace, monospace !important;
  font-size: 13px !important;
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.