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Hi all
Help needed with CSS layout of 3 boxes where 1 box sits next another and then wraps under it.

Fixed header within card, when card itself can scroll out of view
page_main_content is scrollable with a fixed page_main_content_header of variable (thus unknown) height and a body page_main_content_body. The body contains a card (of dynamic height) and pagination. The card itself has a header card_header that is fixed height and should stay in place when scrolling the page_main_content.
Issue is I can't use position:fixed on the card_header as the card width is dynamic....how to create position aware button hover effect
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