fix(a11y): name the modal close button and MDN engine icons for AT

[marcoscaceres]

The modal close button relied on title="Close", which screen readers do not reliably announce, and the MDN engine support emoji had no accessible name at all. This swaps the former for aria-label and gives the emoji icons role="img" plus an aria-label, so assistive technology announces both.

Written with AI: this change was generated by Claude. Per AI_POLICY.md.

[Copilot]

Pull request overview

This PR improves accessibility and resolves a Firefox issue in the W3C profile by ensuring required UI elements and stylesheets are present and correctly labeled.

Changes:

• Update modal close button to use aria-label="Close" instead of relying on title.
• Add role="img" + aria-label to MDN engine-support emoji icons for screen reader compatibility.
• Ensure the W3C dark.css link is always present (using media="not all" for light-only specs) so fixup.js can safely run theme setup without throwing (issue #5200).

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/spec/w3c/style-spec.js	Adds/updates assertions around presence and media of the dark.css link.
tests/spec/core/ui-spec.js	Adds test ensuring modal close button has an accessible label.
tests/spec/core/mdn-annotation-spec.js	Updates tests to assert role="img" and aria-label on engine-support icons.
src/w3c/style.js	Always appends dark.css link to avoid fixup.js theme initialization crash.
src/core/ui.js	Replaces title with aria-label on the modal close button.
src/core/mdn-annotation.js	Adds accessible semantics to emoji-based engine-support indicators.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• android.clients.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• api.specref.org
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-30444975 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=30444975 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=5156 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-10002981 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,7633891663380551061,12127382284584777583,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,4156082773621183881,3077925972704500294,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• clients2.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• clientservices.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• optimizationguide-pa.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• redirector.gvt1.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• respec.org
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-30444975 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=30444975 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=5156 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-10002981 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,7633891663380551061,12127382284584777583,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,4156082773621183881,3077925972704500294,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• safebrowsing.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• safebrowsingohttpgateway.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• update.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• w3c.github.io
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=5156 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-10002981 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,7633891663380551061,12127382284584777583,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,4156082773621183881,3077925972704500294,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-10002981 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=10002981 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=5369 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-57478618 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,1463143331893950598,4514510342230308701,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,4797976925920148610,13263429608761697847,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• www.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4289 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-53567246 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14012296849460148156,16344405798395175158,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,609967996193249427,1646266379268380415,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-53567246 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=53567246 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• www.w3.org
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4876 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-30444975 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,5108666763499229750,17683470410975652610,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,8645754712659286064,8526609116824664728,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-30444975 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=30444975 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=5156 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-10002981 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,7633891663380551061,12127382284584777583,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,4156082773621183881,3077925972704500294,4 --trace-process-track-uuid=3190708989122997041 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[marcoscaceres]

@copilot can you take a look at CI and fix the issue?

[Copilot]

@copilot can you take a look at CI and fix the issue?

Fixed in 28dd807. I checked the failing CI run and updated the W3C style tests to target the actual rel="stylesheet" dark.css link (instead of the preload hint) and assert its media via getAttribute(), which addresses the failure. Screenshot: no UI changes (test-only fix).

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• api.specref.org
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• clients2.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• clientservices.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• redirector.gvt1.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• respec.org
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• safebrowsingohttpgateway.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• www.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)
• www.w3.org
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4225 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-96077647 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,10781046836488724232,9990117645654302192,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,3965183857159199251,9882356765424423089,4 --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /opt/google/chrome/chrome /usr/bin/google-chrome --user-data-dir=/tmp/karma-96077647 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications http://localhost:9876/?id=96077647 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4483 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-44618645 --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12156667204980027964,6782812658514897397,262144 --disable-features=PaintHolding --variations-seed-version --pseudonymization-salt-handle=7,i,11966707153888343895,2642254546986212502,4 --trace-process-track-uuid=3190708989122997041 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[marcoscaceres]

@copilot Can you confirm all your feedback has been addressed? Can you fix anything that was not addressed?

[Copilot]

@copilot Can you confirm all your feedback has been addressed? Can you fix anything that was not addressed?

Confirmed: all prior feedback is addressed in this branch. I rechecked the a11y updates (aria-label on close button, decorative MDN spacer) and the theme-toggle fix path (dark.css handling), and there are no remaining unaddressed review items. Latest relevant branch CI for HEAD 3528637 is green (Node CI (PR), CodeQL, and PR title checks), so no additional code fixes were needed. Screenshot: no UI changes in this verification pass.