These two headings and generally all other headings on the page are using appropriate HTML tags to signify their semantic order and flow on the page. "Renewal for children under 15 and 1/2" is using an h2 tag while the sub-heading "Submit your renewal application online" is using an appropriate semantically correct h3 tag, which was found on inspection using dev tools. This allows screen readers to properly parse the page and also gives proper visual indication that one is a heading and the other is a sub-heading. This corresponds to the principle of "perceivable" because information is clearly being presented to users in a way they can perceive whether via the screen reader correctly parsing the text, or by visually with clear visual differences indicating the semantics and order of the content.

This element and other tabbable elements on the page when focused on using keyboard give clear visible inidication of focus on that element using a bold blue outline which corresponds to the principle of "operable" because people using just a keyboard without screen reader assistance can clearly see which element they have tabbed to allowing the user interface to be operable to the same degree as someone regularly using a mouse to hover over a clickable element (which automatically changes the mouse icon to "hover").

This link and in general all the other links on this page have unique link text that have meaning on their own even if they are tabbed to quickly, they can not be taken out of context by screen readers and confuse users because of their descriptive text describing them. This corresponds to the web accessibility principle of "understandable" as the information in the links are understandable on their own. A common link text such as "click here" provides no context and is not understandable to the user using a screen reader who tabbed to that link, but the descriptive link texts as displayed here, are understandable and on their own.

(Reference to "skip to main content link" when using tab key at the top of the page that takes you to here). The "skip to main content link" at the top of the page (when using a keyboard) corresponds to the web accessibility principle of "operable" as the link appropriatley takes users using only a keyboard (no mouse) to the appropriate beginning of the main content preventing burden on those users who want to skip navigation and other elements and just get to the main content. They are able to operate the interface to perform this action as easily as a person using a mouse can by scrolling.

(Reference to the image to the right of this text) The image of the Ontario Health Card on the top of the page has an alt attribute (inspected using dev tools) less than 125 characters that reads "Ontario health card" which is concise and describes the image. (Screen readers will detect it is an img tag and say something along the lines of "image of" and then read the alt attribute text). This corresponds to the web accesibility principle of "robust" as the descriptive and concise alt attribute allows the image to be interpreted by a wide variety of assistive technologies.