[BUG] . Header Not Sticky When Scrolling

Description:

The header in the Resume project does not remain fixed at the top of the viewport while scrolling, leading to a poor user experience. When users scroll down the page, the header disappears, making navigation difficult.

Expected Behavior:

The header should remain sticky at the top of the viewport while scrolling, allowing users to easily access navigation links.

Actual Behavior:

The header scrolls out of view and does not provide a consistent navigation experience.

I would like to work on this issue and implement a fix for the sticky header. Please assign this task to me @GarimaSingh0109 .