Fixed back button color in login/signup page

[SupratitDatta]

BUG:Make Back to Home button visible on login/signup page

Fixes: #457

Description

Earlier the back to home button icon was not visible in login and isgnup page due to same color.
I have fixed the issue making the button visible and easy to find.

Home button is now easy to find

Type of PR

• Bug fix
• Feature enhancement
• Documentation update
• Other (specify): _______________

Screenshots / videos (if applicable)

[Attach any relevant screenshots or videos demonstrating the changes. Make sure to attach before & after screenshots in your PR.]

Checklist:

• I have made this change from my own.
• I have taken help from some online resources.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers and screenshots after making the changes.

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Name	Status	Preview	Comments	Updated (UTC)
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[PriyaGhosal]

@SupratitDatta
Your pull request has been successfully merged! Don't stop here—continue contributing by addressing more issues and aiming to become a top contributor. Exclusive swag awaits for those who go the extra mile!
Great contribution to GSSOC'24 EXTENDED! 🎉