Large Modal with High Z-Index

This is a large modal that demonstrates a z-index of 2147483647. The modal covers the entire viewport and is positioned above all other elements on the page.

Key features of this modal:

- Z-index: 2147483647 (highest priority)
- Full viewport coverage
- Semi-transparent background overlay
- Centered content with responsive design
- Close button in top-right corner
- Scrollable content area

This modal can be used for important notifications, confirmations, or detailed information displays that need to be prominently displayed above all other page content.