<!DOCTYPE html> <!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <!-- Testcase for how we fragment an empty fixed-height flex container, with various combinations of margin/border/padding helping it to be too tall, and with the flex container having "flex-direction: column-reverse". --> <html> <head> <style> .multicol { height: 10px; width: 100px; -moz-column-width: 20px; -moz-column-fill: auto; border: 2px solid orange; } .flexContainer { display: flex; flex-direction: column-reverse; background: teal; /* border-width is 0 by default; some sub-testcases will increase it. */ border: 0 dashed black; } </style> </head> <body> <!-- NO BORDERS/PADDING --> <!-- ================== --> <!-- content fits exactly into 1 column: --> <div class="multicol"> <div class="flexContainer" style="height: 10px"></div> </div> <!-- content fits, but margin-top pushes it to overflow: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; margin-top: 2px;"></div> </div> <!-- content is too tall, by 1px: --> <div class="multicol"> <div class="flexContainer" style="height: 11px"></div> </div> <!-- BORDERS/PADDING ON TOP --> <!-- ====================== --> <!-- content fits, but border-top makes us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; border-top-width: 2px"></div> </div> <!-- content fits, but padding-top makes us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; padding-top: 2px"></div> </div> <!-- content fits, but border/padding-top make us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; border-top-width: 1px; padding-top: 1px"></div> </div> <!-- BORDERS/PADDING ON BOTTOM --> <!-- ========================= --> <!-- content fits, but border-bottom-width makes us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; border-bottom-width: 2px"></div> </div> <!-- content fits, but padding-bottom makes us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; padding-bottom: 2px"></div> </div> <!-- content fits, but border/padding-bottom make us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; border-bottom-width: 1px; padding-bottom: 1px"></div> </div> <!-- BORDERS/PADDING ON TOP AND BOTTOM --> <!-- ================================= --> <!-- content fits, but border-top/bottom combined make us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; border-top-width: 1px; border-bottom-width: 1px"></div> </div> <!-- content fits, but padding-top/bottom combined make us too tall: --> <div class="multicol"> <div class="flexContainer" style="height: 9px; padding-top: 1px; padding-bottom: 1px"></div> </div> </body> </html>