[Fixes #14464] Improve Login layout

[mattiagiupponi]

New layout:

Checklist

Reviewing is a process done by project maintainers, mostly on a volunteer basis. We try to keep the overhead as small as possible and appreciate if you help us to do so by completing the following items. Feel free to ask in a comment if you have troubles with any of them.

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[gemini-code-assist]

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