Letting Cloudflare serve Brotli-compressed data with nginx

Google PageSpeed flagged a stylesheet on ohdear.app the other day: front.css , the bundle for its public-facing pages. That surprised me, because Cloudflare sits in front of ohdear.app and Cloudflare does Brotli, and a Brotli&rsquo;d copy of that file is around 40 KB. Browsers were downloading just over 50 KB of gzip instead. So why wasn&rsquo;t Brotli kicking in?