I'm in the midst of making a lightbox style pop-up for a mailing list sign up, but I want the pop-up to position to the center of the visible page, not just the center of the whole document; if the user scrolls to the bottom of the page and clicks to sign up, I want it to appear in the center of the screen.
I'm assuming jQuery/JS will be the best way to go for this; here's my current CSS code which works fairly well but the div needs to be pushed down into the visible space dynamically for smaller screens.
You were close! It can be done with CSS alone:
position: fixed instead of
Fixed refers to the viewport, while absolute refers to the document. Read all about it!