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HTML_and_CSS JavaScript_functionality Manifest_file Secure_connection Service_workers
/mdn2/en-US/docs/Web/Progressive_web_apps/Tutorials/CycleTracker/HTML_and_CSSHTML_and_CSS
/mdn2/en-US/docs/Web/Progressive_web_apps/Tutorials/CycleTracker/Manifest_fileManifest_file
/mdn2/en-US/docs/Web/Progressive_web_apps/Tutorials/CycleTracker/Secure_connectionSecure_connection
/mdn2/en-US/docs/Web/Progressive_web_apps/Tutorials/CycleTracker/Service_workersService_workers