fixed footer in mobile view

[dhairyagothi]

Issue Title:

closes #481

Type of change ☑️

fixed footer css
What sort of change have you made:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist: ☑️

• My code follows the guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly wherever it was hard to understand.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added things that prove my fix is effective or that my feature works.
• Any dependent changes have been merged and published in downstream modules.

How Has This Been Tested? ⚙️

Describe how have you verified the changes made.

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[github-actions]

Welcome to Our repository.🎊 Thank you so much for taking the time to point this out.

[dhairyagothi]

@singodiyashubham87 please check and merge

[singodiyashubham87]

Approved!

[dhairyagothi]

@singodiyashubham87 please assign PR to me