Expand Code to Fullscreen on StackExchange Site

Toggle Fullscreen on Hover: When users hover over a code block, a 'Fullscreen' button appears. Clicking this button will expand the code block to fill the entire screen, facilitating easier reading and analysis of the code without distractions from other page content.
Clean Exit from Fullscreen: When the user exits fullscreen mode, the code block returns to its original state without any leftover styling or class changes, ensuring the page remains as it was before the script's interaction.