I'm trying to build a page that shall include a record view and a list of links. My plan is to have split view with the links to the left and the record to the right (like the pages in Project Workspace). I'm using a record page as the basis since this works as expected for the record details. To have multiple 'panes' in the page I'm planning to use a split view or a two column setup. However, when I bundle the record containers in a flexbox, the content will no longer fit the entire body will will adjust to fit the content.
How can I force the content of the flexbox to be 100% height of the body (I have tried height=100%, min. height=100% and various settings on the flexbox)?
I have included screenshots of the standard record page that will fit the entire body and a custom page where the same content is included in a flexbox.
Thanks.
Standard record page:
Record page with flexbox:
