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Nested scrolling issue

Hey, I have an issue with my layout and making things scroll.

Aa is 80%, Ba is 20% width & and both with 100vH —> Works
BaA is aligned to the top of Ba —> Works

The issue is …
I want BaAa[i] items (chat messages) to be aligned to the bottom of BaA and as I keep adding items the list goes up. It also has to be scrollable as the messages come in.

Any tips would be really helpful

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