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I didn't know how else to change states so I set both sets to an absolute position and hide the 'Thank you' card. Is this the correct way to do something like this? The alternative seemed like a bunch of DOM manipulation which seemed impractical.

Attempt 2. There seems to be accessibility issues. Can anyone explain what this is?

Document should have one main landmark Context:

Page should contain a level-one heading Context:

All page content should be contained by landmarks Context: