You want the BST implementation embedded in an HTML that can be opened directly and run interactively on the page without errors. The code I proposed is designed exactly for that: a single HTML file with inline CSS and JavaScript that you can open in any modern browser and use.
I will provide the complete HTML file content again here, ensuring it is well formatted and fully functional so you can just save it as an .html file and open it in a browser (e.g., Chrome, Firefox, Edge) to run the BST visualization and interaction page.
No external dependencies or backend needed.
`bst-demo.html`
```html
Binary Search Tree (BST) Visualization