Added a semi-complex margin-bottom-end test #27718
On my website:
This test is a slightly modified version of the original testcase from Morten Stenshorne (credits given).
This test spun from Issue 750992.
The issue with Chrome 88 is also noticeable with 'overflow: auto'.
A green-versus-red variation of the -001 test above:
The failure demonstrated by both tests can be seen and still exists with 'overflow: auto' (instead of 'overflow: hidden').