How do I vertically center a popup?

[Minty]

I have a popup that is centred horizontally.

But how do I center it vertically?

[eli]

You can do this with a bit of CSS code.

Set an ID on the popup at the bottom of the property inspector:

In the html header input for the page, add the following CSS:

Good luck!

[Minty]

Thanks that did the trick!