bottom 20 px from "canvas" NOT screen - possible ?

Hello to all

Can anyone help me ?

I'd like to create a box whose bottom is always 20 px from the bottom of the "canvas" (=the total area rendered by the browser).

This is straightforward when the height of the canvas is less than the screen height

But v v tricky when the canvas is taller than the screen-height.

Is this possible with CSS ? If so, how ?

Thanks for help.

 

Define canvass?

Maybe overflow: auto; can help.

 

If monitor size were infinite then "canvas" would be the size of the page.

(hope this makes sense)

 

You would put a height on body and then make it overflow:auto; though this isn't reccomended since people use all sorts of different browser heights. 1280x1024, 1024x768, 800x600, etc.

YIPKP,
Nick