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This is the template. Everything above this line is the shell; everything below it is where a tool goes.
What you are looking at
The header is the site's, shared by every tool here and drawn from one place. Click the site icon in the left corner, or the cog, and watch it leave; the next page brings it back. None of that behaviour is in this tool — and neither is the stylesheet that makes this card a card.
What to do next
Replace this page's content. Add rows to the nav array in
bootstrap.php for each page you add. Put your data access in
a file of its own beside it and require it there.
A banner looks like this. Kinds: ok, warn, bad.