Html object inside a board

[Cyrille Piatecki]

For presentation reasons, I need to position a Sagecell cell inside a board. I have not been able to obtain what I expected. So I have add a cell with a relative position. But when the screen is resized the position is lost.

[Murray]

Best to include a link to a JSFiddle with a minimal example of what you've tried so far. Then it's easier to answer you.

Regards

Murray