As it was already answered (How can I have a position: fixed; behaviour for a flexbox sized element?) absolutely/fixed positioned boxes are taken out of the normal flow of Flexbox-aligned elements. But how can I at least simulate position: fixed
behavior of, say, width: 300px; height: 100vw
element?
Here is a demo (http://codepen.io/anon/pen/ZGmmzR) of initial layout with sidebar on the left and content block on the right. I would like nav
act like position: fixed
element following user's scroll across the page. I know how to do it without Flexbox. In the first place I would consider pure CSS solution without using JavaScript. Thank you!