Auto height on parent container with Absolute/Fixed Children

Question

Im trying to set an automatic height a div that contains 2 child elements, positioned fixed and absolutely respecitvely.

I want my parent container to have an auto h

Answer 1

If you don't want to use JavaScript, you could refer this answer https://stackoverflow.com/a/33788333/1272106.

Short description: duplicate one element and set visibility to hide to expand the parent.