HTTP/2 200 
etag: "167b7b792f57ab272e028bd92373d10f"
content-type: text/html
server: Google Frontend
x-goog-stored-content-encoding: identity
referrer-policy: strict-origin-when-cross-origin
x-goog-metageneration: 1
x-goog-storage-class: STANDARD
x-cloud-trace-context: 13f05f418fae07f9a6423d08e53491de
x-goog-hash: crc32c=vgOXWg==, md5=Fnt7eS9XqycuAovZI3PRDw==
content-security-policy: default-src 'self'; script-src 'report-sample' 'self' 'wasm-unsafe-eval' assets.codepen.io production-assets.codepen.io https://js.stripe.com transcend-cdn.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; script-src-elem 'report-sample' 'self' 'wasm-unsafe-eval' assets.codepen.io production-assets.codepen.io https://js.stripe.com transcend-cdn.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; style-src 'report-sample' 'self' 'unsafe-inline' transcend-cdn.com; object-src 'none'; base-uri 'self'; connect-src 'self' developer.allizom.org bcd.developer.allizom.org bcd.developer.mozilla.org updates.developer.allizom.org updates.developer.mozilla.org https://incoming.telemetry.mozilla.org https://observatory-api.mdn.allizom.net https://observatory-api.mdn.mozilla.net telemetry.transcend.io telemetry.us.transcend.io transcend-cdn.com https://api.github.com/search/issues https://api.stripe.com; font-src 'self'; frame-src 'self' mdn.github.io *.mdnplay.dev *.mdnyalp.dev *.play.test.mdn.allizom.net https://v2.scrimba.com https://scrimba.com jsfiddle.net www.youtube-nocookie.com codepen.io survey.alchemer.com https://js.stripe.com; img-src 'self' data: *.githubusercontent.com *.gravatar.com mozillausercontent.com firefoxusercontent.com profile.stage.mozaws.net profile.accounts.firefox.com developer.mozilla.org mdn.dev wikipedia.org upload.wikimedia.org https://mdn.github.io/shared-assets/ https://mdn.dev/; manifest-src 'self'; media-src 'self' archive.org videos.cdn.mozilla.net https://mdn.github.io/shared-assets/; child-src 'self'; worker-src 'self';
x-guploader-uploadid: AKhXX7LrJOHq0Bg0Rg8zjzriklPSGzz0nZrDKA5MrGzE2SxjqOpJKqspoARGDScq5yFk5-nK
x-frame-options: DENY
x-goog-stored-content-length: 180158
x-content-type-options: nosniff
x-goog-meta-goog-reserved-file-mtime: 1784517008
strict-transport-security: max-age=63072000
via: 1.1 google, 1.1 varnish, 1.1 varnish, 1.1 varnish
x-goog-generation: 1784518474190008
expires: Mon, 20 Jul 2026 05:44:40 GMT
last-modified: Mon, 20 Jul 2026 03:34:34 GMT
cache-control: public, max-age=3600
accept-ranges: bytes
age: 1868
date: Mon, 20 Jul 2026 05:15:48 GMT
x-served-by: cache-bfi-kbfi7400103-BFI, cache-bfi-kbfi7400103-BFI, cache-bfi-kbfi7400074-BFI, cache-nyc-kteb1890080-NYC
x-cache: MISS, MISS, MISS
x-cache-hits: 0, 0, 0
x-timer: S1784524548.440321,VS0,VE146
vary: Accept-Encoding
content-length: 180158