[PAY-3948] Improve rewards page UI

[dylanjeffers]

Description

Improves a bunch of various elements according to Figma. Will enumerate in the AM

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Latest commit: 00755da42539f26c9d896be35f82671d603ee473

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[dharit-tan]

this doesn't really make the UI system composable i think? but can follow up with that later. would be a more structural thing than UI.

[dylanjeffers]

this doesn't really make the UI system composable i think? but can follow up with that later. would be a more structural thing than UI.

yeah im going to take the individual styling parts of this pr and lay that on top of your structural changes