**Whoops!**

There were **25 critical errors** that broke the build and prevented it from being automatically deployed.

There were *343 warnings* that will prevent this PR from being merged. Please take a look, and either fix, or provide a justification for why they can't be fixed.

**ERRORS**
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L354`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L354) - Do not hard code `developers.google.com` in links.
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/faq.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/faq.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/faq.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/faq.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/how-push-works.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/how-push-works.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/how-push-works.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/how-push-works.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/index.md`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/index.md) - Page is missing page title eg: `# TITLE {: .page-title }`
[`src/content/en/fundamentals/engage-and-retain/push-notifications/non-standards-browsers.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/non-standards-browsers.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/non-standards-browsers.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/non-standards-browsers.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/notification-behaviour.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/notification-behaviour.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/notification-behaviour.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/notification-behaviour.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/permission-ux.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/permission-ux.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/permission-ux.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/permission-ux.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/push-events.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/push-events.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/push-events.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/push-events.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/sending-messages-with-web-push-libraries.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/sending-messages-with-web-push-libraries.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/sending-messages-with-web-push-libraries.md#L12`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/sending-messages-with-web-push-libraries.md#L12) - Don’t use multiple top level headings (12:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/subscribing-a-user.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/subscribing-a-user.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/subscribing-a-user.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/subscribing-a-user.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/web-push-protocol.md#L4`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/web-push-protocol.md#L4) - WF Tag `wf_updated_on` invalid format (YYYY-MM-DD), found:
[`src/content/en/fundamentals/engage-and-retain/push-notifications/web-push-protocol.md#L11`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/web-push-protocol.md#L11) - Don’t use multiple top level headings (11:1)
[`src/content/en/fundamentals/engage-and-retain/push-notifications/web-push-protocol.md#L241`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/web-push-protocol.md#L241) - Do not hard code `developers.google.com` in links.

**WARNINGS**
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L13`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L13) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L21`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L21) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L36`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L36) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L68`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L68) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L78`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L78) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L82`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L82) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L84`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L84) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L119`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L119) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L127`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L127) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L137`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L137) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L142`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L142) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L175`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L175) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L177`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L177) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L183`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L183) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L203`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L203) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L241`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L241) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L246`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L246) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L250`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L250) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L258`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L258) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L260`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L260) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L286`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L286) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L308`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L308) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L310`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L310) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L312`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L312) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L346`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L346) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L350`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L350) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L352`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/common-notification-patterns.md#L352) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L13`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L13) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L15`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L15) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L17`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L17) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L55`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L55) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L62`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L62) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L76`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L76) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L80`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L80) - Line must be at most 100 characters
[`src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L84`](https://github.com/Google/WebFundamentals/blame/3e8498c8d5ee501454ca908bbfb0c6c3aa4a7abb/src/content/en/fundamentals/engage-and-retain/push-notifications/display-a-notification.md#L84) - Line must be at most 100 characters
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