fix(navbar): fix layout break at 799px screen width

[arpit-925]

Title: Fix navbar layout issue on smaller screens

Description:
Fixes the navbar position at 799px width and ensures layout consistency.

Proposed Solution:
Added media query to fix navbar and adjust body padding.

Labels: fix / Level 1

[arpit-925]

Title: Fix navbar layout issue on smaller screens

Description:
Fixes the navbar position at 799px width and ensures layout consistency.

Proposed Solution:
Added media query to fix navbar and adjust body padding.

Labels: fix / Level 1

[greptile-apps]

Greptile Summary

This PR addresses a responsive design issue in the CodeClip application's navigation bar that occurs specifically at 799px screen width. The fix implements a targeted media query that converts the navbar to a fixed positioning approach when the screen width is at or below 799px.

The change adds a new CSS media query in styles/main.css that:

• Sets the navbar to position: fixed with full width coverage
• Adds proper z-index layering (z-index: 1000) to ensure the navbar stays above other content
• Compensates for the fixed navbar by adding 60px of top padding to the body element

This solution fits into the existing responsive design system by filling a gap between standard breakpoints (likely addressing an issue that occurs between Bootstrap's 768px and 992px breakpoints). The fixed navbar approach is a common pattern for ensuring navigation accessibility on smaller screens while preventing content overlap.

Confidence score: 3/5

• This PR addresses a specific layout issue but introduces potential problems with hardcoded values and theme compatibility
• Score reflects concerns about the fixed 60px padding assumption and lack of consideration for variable navbar heights across different themes
• Pay close attention to styles/main.css to ensure the hardcoded padding value works across all navbar configurations and themes

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