Improve mobile layout by stacking Live Chat below video section

[ojhakhushi01]

On smaller screen sizes (mobile view), the video section and the Live Chat section are displayed side-by-side.

This makes the layout feel congested and reduces readability due to limited horizontal space.

Suggested Improvement:
For screen widths below 768px, stack the Live Chat section below the video instead of placing them horizontally.

This would improve spacing, readability, and overall mobile user experience.

[ojhakhushi01]

I'd like to work on it.

[denshaw-09]

@ojhakhushi01 raise a pr for the same