<!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 height:auto grid, not top-of-page, item break-inside:avoid</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; -ms-columns: 5; -webkit-columns: 5; columns: 5; -ms-column-fill: auto; -webkit-column-fill: auto; column-fill: auto; border: 2px solid salmon; margin-bottom: 5px; } .grid { display: grid; grid-template-columns: 30px 30px 30px; grid-auto-rows: 30px; grid-gap: 12px; border:5px solid; align-content: space-evenly; } span { background:lime; border:1px solid black; } x { display:block; height:20px; } i { display:block; height:10px; margin-top:7px; background:blue; } .t { border-bottom-width:0; } .b { border-top-width:0; } .br1 { height:94px; border-width:5px; border-top-style:solid; } </style> </head> <body> <div class="columns" style="height: 110px/*trigger IsInlineBreakBefore() for the item*/"> <div style="padding-top:30px; background:grey"> <div class="grid"> <span><i></i><i></i><i></i><i></i><i></i><i></i><x></x></span> </div> </div></div> <div class="columns" style="height: 70px/*item will be INCOMPLETE*/"> <div style="background:grey"> <div class="grid"> <span><i></i><i></i><i></i><i></i><i></i><i></i><x></x></span> </div> </div></div> <div class="columns" style="height: 100px/*item will be INCOMPLETE*/"> <div style="background:grey"> <div class="grid"> <span style="grid-row:span 2"><i></i><i></i><i></i><i></i><i></i><i></i><x></x></span> </div> </div></div> <!-- bug 1415301 <div class="columns" style="height: 140px/*trigger IsInlineBreakBefore() for the item*/"> <div style="padding-top:30px; background:grey"> <div class="grid"> <span style="grid-row:span 3"><x></x></span> <span style="grid-row:span 2"><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i><i></i><x></x></span></div> </div></div> --> <div class="columns" style="height: 100px/*trigger IsInlineBreakBefore() for the item*/"> <div style="padding-top:1px; background:grey"> <div class="grid t" style="grid-auto-rows: 50px; height:50px;"> <span class="t" style="grid-row:span 2; height:49px; overflow:hidden"><i></i><i></i><i></i><x></x></span> </div> <div style="height:44px"></div> <div class="grid b" style="grid-auto-rows: 50px; height:50px;"> <span class="b" style="grid-row:span 2; height:11px; overflow:hidden"><i style="margin-top:0;height:2px"></i><x></x></span> </div> </div></div> <div class="columns" style="height: 100px/*trigger IsInlineBreakBefore() for the item*/"> <div style="padding-top:1px; background:grey"> <div class="br1"></div> <div class="grid b" style="grid-auto-rows: 50px; height:116px;"> <span style="grid-row:span 2; height:60px"><i></i><i></i><i></i><x></x></span> </div> </div></div> <div class="columns" style="height: 100px/*trigger IsInlineBreakBefore() for the item*/"> <div style="padding-top:1px; background:grey"> <div class="br1"></div> <div class="grid b" style="grid-auto-rows: 50px; height:116px; grid-gap:0;"> <span style="grid-row:span 2; height:60px"><i></i><i></i><i></i><x></x></span> </div> </div></div> <div class="columns" style="height: 100px/*trigger IsInlineBreakBefore() for the item*/"> <div style="padding-top:1px; background:grey"> <div class="br1"></div> <div class="grid b" style="grid-auto-rows: 50px; height:116px; grid-gap:0;"> <span style="height:100px; background:pink"><x></x></span> <span style="grid-row:span 2; height:60px"><i></i><i></i><i></i><x></x></span> </div> </div></div> </body> </html>