Feat: Adjusting Login/Signup for making it compatible with Dark mode and making it responsive

[Asymtode712]

Describe the feature

Currently, Login/Signup is not compatible with Dark mode and changes are to be made and we also have to make it responsive for smaller screens

Add ScreenShots

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• I want to work on this issue

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[Asymtode712]

@mdazfar2 Please assign me this issue

[mdazfar2]

@Asymtode712 Issue acknowledged! You are going to be assigned.