<!DOCTYPE HTML> <!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --> <html><head> <meta charset="utf-8"> <title>Reference: Fragmentation of definite height grid, forced row breaks, avoid-break grid</title> <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1144096"> <style type="text/css"> html,body { color:black; background-color:white; font-size:16px; padding:0; margin:0; } body { overflow:hidden; } .columns { position:relative; -moz-columns: 5; -ms-columns: 5; -webkit-columns: 5; columns: 5; -moz-column-fill: auto; -ms-column-fill: auto; -webkit-column-fill: auto; column-fill: auto; border: 2px dashed; margin-bottom: 5px; } .grid { display: grid; grid-template-columns: 30px 30px 30px; grid-auto-rows: 30px; grid-gap: 12px; border:5px solid; } span { background:lime; border:1px solid black; } x { display:block; height:20px; } .t { border-bottom-width:0; } .b { border-top-width:0; } .m { border-top-width:0; border-bottom-width:0; } s { display:block; height:90px; } </style> </head> <body> <div class="columns" style="height: 100px/*two rows would fit in 1st column*/"> <div style="padding-top:10px; background:grey"> <s></s> <div class="grid t"> <span><x></x></span> <span class="t"><x></x></span> <span class="t" style="background:cyan"><x></x></span> </div> <div style="height:40px;"></div> <div class="grid b" style="height:60px"> <span class="b"><x></x></span> <span class="b" style="grid-area:1/3; height:6px; background:cyan"><x></x></span> <span style="grid-area:1/3; align-self:end; background:pink"><x></x></span> <span style="grid-row:1"><x></x></span> <span><x></x></span> </div></div></div> <div class="columns" style="height:30px"> <div style="padding-top:10px; background:grey"> <s style="height:20px;"></s> <div style="height:90px;border:5px solid;"></div> </div></div> <div class="columns" style="height: 60px/*everything would fit in 1st column*/"> <div style="padding-top:10px; background:grey"> <div style="height:50px;"></div> <div class="grid t"> <span><x></x></span> </div> <div style="height:60px; border:5px solid; border-top-width:0;"> </div></div></div> <div class="columns" style="height: 100px/*everything would fit in 1st column*/"> <div style="padding-top:10px; background:grey"> <s></s> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span class="t" style="background:cyan"><x></x></span> </div> <div style="height:40px;"></div> <div class="grid b" style="padding-bottom:30px"> <span class="b" style="grid-area:1/1; height:6px"><x></x></span> <span style="align-self:end; grid-area:1/1; background:pink"><x></x></span> <span class="b"><x></x></span> <span class="b" style="height:6px; background:cyan"><x></x></span> </div></div></div> <div class="columns" style="height: 100px/*everything would fit in 1st column*/"> <div style="padding-top:10px; background:grey"> <s></s> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span class="t" style="background:cyan"><x></x></span> </div> <div style="height:40px;"></div> <div class="grid b" style="padding-bottom:30px"> <span class="b" style="grid-area:1/1; height:6px"><x></x></span> <span style="align-self:end; grid-area:1/1; background:pink"><x></x></span> <span class="b"><x></x></span> <span class="b" style="height:6px; background:cyan"><x></x></span> </div></div></div> <div class="columns" style="height: 100px/*everything would fit in 1st column*/"> <div style="padding-top:10px; background:grey"> <div style="height:90px;"></div> <div class="grid" style="padding-bottom:18px"> <span style="height:35px"><x></x></span> <span style="grid-row:span 2"><x></x></span> <span style="height:35px; background:cyan"><x></x></span> <span style="grid-area:2/1; align-self:end; background:pink"><x></x></span> </div> </div></div> <div class="columns" style="height: 97px/*everything would fit in 1st column, except bottom border*/"> <div style="padding-top:10px; background:grey"> <div style="height:87px;"></div> <div class="grid t" style="padding-bottom:18px"> <span style="height:35px"><x></x></span> <span style="grid-row:span 2"><x></x></span> <span style="height:35px; background:cyan"><x></x></span> <span style="grid-area:2/1; align-self:end; background:pink"><x></x></span> </div> <div class="grid b"></div> </div></div> <div class="columns" style="height: 80px/*one row fits in 1st column, two in 2nd column, but forced break there*/"> <div style="padding-top:30px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t" style="background:cyan"><x></x></span> </div> <div class="grid m"> <span class="b" style="grid-area:1/1; height:6px"><x></x></span> <span class="b" style="background:cyan"><x></x></span> <span style="grid-area:1/1; align-self:end; background:pink"><x></x></span> </div> <div style="height:50px"></div> <div class="grid b"> <span><x></x></span> </div> </div></div> <div class="columns" style="height: 160px/*everything would fit in 1st column*/"> <div style="padding-top:30px; background:grey"> <div class="grid t"> <span class="t" style="grid-row: span 2"><x></x></span> <span style="grid-row: span 2"><x></x></span> </div> <div style="height:53px"></div> <div style="height:18px; border:5px solid; border-top-width:0;"> <span class="b" style="display:block;height:29px;width:28px"></span> </div> </div></div> </body> </html>