<!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</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 dashed; margin-bottom: 5px; } .block { border:5px solid; } .grid { display: grid; grid-template-columns: 30px 30px 30px; grid-template-rows: 50px; grid-column-gap: 12px; border:5px solid; } .t { border-bottom-width:0; } .b { border-top-width:0; } span { background:lime; border:1px solid black; } x { display:block; height:20px; } br { page-break-before:always; break-before:always; } </style> </head> <body> <div class="columns" style="height: 130px/*fragmentainer ends in the end border*/"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <br> <div class="grid b"> <span><x></x></span> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:3; align-self:end; background:pink"><x></x></span> </div></div></div> <div class="columns" style="height: 18px/*fragmentainer ends in the end border*/"> <div style="padding-top:10px; background:grey"> <div class="block"> </div></div></div> <div class="columns" style="height: 20px/*fragmentainer ends in the end border*/"> <div style="padding-top:10px; background:grey"> <div class="block" style="height:2px/*creates a Class C break opportunity at the end*/"> </div></div></div> <div class="columns" style="height: 100px/*fragmentainer ends in the last row*/"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <br> <div class="grid b"> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span> </div></div></div> <div class="columns" style="height: 70px/*fragmentainer ends in the grid gap between the rows */"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <div class="grid b"> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span> </div></div></div> <div class="columns" style="height: 40px/*fragmentainer ends in the first row*/; margin-bottom:30px"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <div class="grid b"> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span> </div></div></div> <div class="columns" style="height: 13px/*fragmentainer ends in the grid start border */; margin-bottom:60px"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <div class="grid b"> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span> </div></div></div> <div class="columns" style="height: 8px/*fragmentainer ends above the grid*/; margin-bottom:60px"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <div class="grid b"> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span> </div></div></div> <div class="columns" style="height: 0px/*zero height fragmentainer*/; margin-bottom:60px"> <div style="padding-top:10px; background:grey"> <div class="grid t"> <span class="t"><x></x></span> <span class="t"><x></x></span> <span style="background:cyan" class="t"><x></x></span> </div> <div class="grid b"> <span class="b"><x></x></span> <span class="b" style="grid-row:1; grid-column:1; height:11px;"><x></x></span> <span class="b" style="grid-row:1; grid-column:3; height:11px; background:cyan"><x></x></span> <span style="grid-row:1; grid-column:1; align-self:end; background:pink"><x></x></span> </div></div></div> </body> </html>