This tests whether flex-box behaves well with unusual children.
The boxes are width and height 100px.
With a position: absolute;
child
With a position: fixed;
child
With a position: relative;
child
With a position: static;
child
With a position: sticky;
child
With a position: absolute;
child
With a position: fixed;
child
With a position: relative;
child
With a position: static;
child
With a position: sticky;
child