Option 1 — VS Code (recommended)

Install "Live Server" extension → Right-click the HTML file → "Open with Live Server"

Option 2 — Python (built-in)

# Open terminal in the folder containing this file, then run:
python -m http.server 8080
# Then open: http://localhost:8080/tdmh_maintenance_hub.html

Option 3 — Node.js

npx serve .
# Then open the URL it shows you