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+<!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>