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-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-001-ref.html78
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-001.html74
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-002-ref.html79
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-002.html75
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-003-ref.html84
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-003.html75
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-004-ref.html88
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-004.html82
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-005-ref.html83
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-005.html77
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-006-ref.html54
-rw-r--r--layout/reftests/css-grid/grid-item-overflow-stretch-006.html56
-rw-r--r--layout/reftests/css-grid/reftest.list6
13 files changed, 911 insertions, 0 deletions
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-001-ref.html b/layout/reftests/css-grid/grid-item-overflow-stretch-001-ref.html
new file mode 100644
index 000000000..463bbb4e6
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-001-ref.html
@@ -0,0 +1,78 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Reference: stretching overflow!=visible items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px 30px 3px / 7px 80px 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ min-width:0;
+ min-height:0;
+ box-sizing: border-box;
+}
+
+.oa, .os, .oh { width:80px; height:30px; }
+.m.oa, .m.os, .m.oh { width:70px; height:24px; }
+.oa { overflow: auto; }
+.os { overflow: scroll; }
+.oh { overflow: hidden; }
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" " style="width:112px"><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m " style="width:112px"><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" " style="height:112px"><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m " style="height:112px"><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-001.html b/layout/reftests/css-grid/grid-item-overflow-stretch-001.html
new file mode 100644
index 000000000..4f6259abe
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-001.html
@@ -0,0 +1,74 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: stretching overflow!=visible items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <link rel="match" href="grid-item-overflow-stretch-001-ref.html">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px auto 3px / 7px auto 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+}
+
+.oa { overflow: auto; }
+.os { overflow: scroll; }
+.oh { overflow: hidden; }
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-002-ref.html b/layout/reftests/css-grid/grid-item-overflow-stretch-002-ref.html
new file mode 100644
index 000000000..a9690a54e
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-002-ref.html
@@ -0,0 +1,79 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Reference: stretching overflow!=visible vertical-rl items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px 30px 3px / 7px 80px 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ writing-mode: vertical-rl;
+ min-width:0;
+ min-height:0;
+ box-sizing: border-box;
+}
+
+.oa, .os, .oh { width:80px; height:30px; }
+.m.oa, .m.os, .m.oh { width:70px; height:24px; }
+.oa { overflow: auto; }
+.os { overflow: scroll; }
+.oh { overflow: hidden; }
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" " style="width:112px"><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m " style="width:112px"><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" " style="height:112px"><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m " style="height:112px"><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-002.html b/layout/reftests/css-grid/grid-item-overflow-stretch-002.html
new file mode 100644
index 000000000..520eed911
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-002.html
@@ -0,0 +1,75 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: stretching overflow!=visible vertical-rl items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <link rel="match" href="grid-item-overflow-stretch-002-ref.html">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px auto 3px / 7px auto 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ writing-mode: vertical-rl;
+}
+
+.oa { overflow: auto; }
+.os { overflow: scroll; }
+.oh { overflow: hidden; }
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-003-ref.html b/layout/reftests/css-grid/grid-item-overflow-stretch-003-ref.html
new file mode 100644
index 000000000..c082e6be4
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-003-ref.html
@@ -0,0 +1,84 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Reference: margin:auto stretch items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px 30px 3px / 7px 112px 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+.c2 { grid-template-columns: 7px 122px 3px; }
+.h > .grid { grid: 7px 112px 3px / 7px 80px 3px; }
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ margin: 0 auto;
+ justify-self:start;
+ align-self:start;
+ height:28px;
+}
+.c2 > * { height:22px; }
+.h .grid > * {
+ margin: 10px 0 0 10px;
+ justify-self:center;
+ align-self:center;
+ width:5px;
+ height:110px;
+}
+
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid c2"><span class="m oa"><x></x></span></div>
+<div class="grid c2"><span class="m os"><x></x></span></div>
+<div class="grid c2"><span class="m oh"><x></x></span></div>
+<div class="grid c2"><span class="m "><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-003.html b/layout/reftests/css-grid/grid-item-overflow-stretch-003.html
new file mode 100644
index 000000000..8bcd79d9b
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-003.html
@@ -0,0 +1,75 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: margin:auto stretch items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <link rel="match" href="grid-item-overflow-stretch-003-ref.html">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px auto 3px / 7px auto 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ margin: 0 auto;
+}
+.h .grid > * {
+ margin: auto;
+}
+
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="oa"><x></x></span></div>
+<div class="grid"><span class="os"><x></x></span></div>
+<div class="grid"><span class="oh"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m oa"><x></x></span></div>
+<div class="grid"><span class="m os"><x></x></span></div>
+<div class="grid"><span class="m oh"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-004-ref.html b/layout/reftests/css-grid/grid-item-overflow-stretch-004-ref.html
new file mode 100644
index 000000000..71ed28d7c
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-004-ref.html
@@ -0,0 +1,88 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Reference: stretching items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 90px;
+ height: 50px;
+ grid: 7px 30px 3px / 7px 102px 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+.c2 { grid: 7px 30x 3px / 7px 112px 3px; grid-gap: 5px;}
+.c3 { grid: 7px 30x 3px / 7px 70px 3px; grid-gap: 5px;}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ min-width: 0;
+ max-width: 100px;
+}
+.h .grid > * {
+ min-height: 0;
+ max-height: 100px;
+ justify-self:center safe;
+ align-self:center safe;
+}
+.h > .grid { grid: 7px 102px 3px / 7px 70px 3px; grid-gap: 5px;}
+.h > .grid.c2 { grid: 7px 30px 3px / 7px 70px 3px; grid-gap: 5px;}
+.h > .grid.c3 { grid: 7px 108px 3px / 7px 70px 3px; grid-gap: 5px;}
+
+.oa { overflow: auto; }
+.p { width: 100%; }
+.h .grid > .p { height: 100%; }
+.x { width:5px; }
+.h .grid > .x { max-height:5px; }
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="p oa"><x></x></span></div>
+<div class="grid"><span class="p "><x></x></span></div>
+<div class="grid c2"><span class="p x" style="height:5px; margin-left:31.5px; margin-top:11.5px"><x></x></span></div>
+<div class="grid c2"><span class=" " style="width:68px"><x></x></span></div>
+
+<br>
+
+<div class="grid c3"><span class="p m oa"><x></x></span></div>
+<div class="grid c3"><span class="p m"><x></x></span></div>
+<div class="grid c2"><span class="m p x"><x></x></span></div>
+<div class="grid c2"><span class="m " style="width:58px"><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="p oa"><x></x></span></div>
+<div class="grid"><span class="p "><x></x></span></div>
+<div class="grid c2"><span class="p x" style=""><x></x></span></div>
+<div class="grid c2"><span class=" " style="height:28px; width:68px;"><x></x></span></div>
+
+<br>
+
+<div class="grid c3"><span class="m p oa"><x></x></span></div>
+<div class="grid c3"><span class="m p"><x></x></span></div>
+<div class="grid c2"><span class="m p x" style="justify-self:start;align-self:start"><x></x></span></div>
+<div class="grid c2"><span class="m " style="height:22px; width:58px"><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-004.html b/layout/reftests/css-grid/grid-item-overflow-stretch-004.html
new file mode 100644
index 000000000..b983b5184
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-004.html
@@ -0,0 +1,82 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: stretching items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <link rel="match" href="grid-item-overflow-stretch-004-ref.html">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 90px;
+ height: 50px;
+ grid: 7px auto 3px / 7px auto 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ min-width: 0;
+ max-width: 100px;
+}
+.h .grid > * {
+ min-height: 0;
+ max-height: 100px;
+}
+
+.oa { overflow: auto; }
+.p { width: 100%; }
+.h .grid > .p { height: 100%; }
+.x { max-width:5px; margin:auto; }
+.h .grid > .x { max-height:5px; }
+.m { margin: 1px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class="p oa"><x></x></span></div>
+<div class="grid"><span class="p "><x></x></span></div>
+<div class="grid"><span class="p x"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="p m oa"><x></x></span></div>
+<div class="grid"><span class="p m"><x></x></span></div>
+<div class="grid"><span class="m p x"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="p oa"><x></x></span></div>
+<div class="grid"><span class="p "><x></x></span></div>
+<div class="grid"><span class="p x"><x></x></span></div>
+<div class="grid"><span class=" "><x></x></span></div>
+
+<br>
+
+<div class="grid"><span class="m p oa"><x></x></span></div>
+<div class="grid"><span class="m p"><x></x></span></div>
+<div class="grid"><span class="m p x"><x></x></span></div>
+<div class="grid"><span class="m "><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-005-ref.html b/layout/reftests/css-grid/grid-item-overflow-stretch-005-ref.html
new file mode 100644
index 000000000..e7d353c8b
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-005-ref.html
@@ -0,0 +1,83 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Reference: stretching overflow!=visible items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px auto 3px / 7px auto 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ -moz-appearance: none;
+ -webkit-appearance: none;
+ appearance: none;
+ min-width:0;
+ min-height:0;
+ box-sizing: border-box;
+}
+
+.oa, .os, .oh { width:80px; height:30px; }
+.m.oa, .m.os, .m.oh { width:70px; height:8px; }
+.oa { overflow: auto; }
+.os { overflow: scroll; }
+.oh { overflow: hidden; }
+.ov { justify-self: start; }
+.m.ov { align-self: start; }
+.m { margin: 17px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><input class="oa"></div>
+<div class="grid"><input class="os"></div>
+<div class="grid"><input class="oh"></div>
+<div class="grid"><input class="ov"></div>
+
+<br>
+
+<div class="grid"><input class="m oa"></div>
+<div class="grid"><input class="m os"></div>
+<div class="grid"><input class="m oh"></div>
+<div class="grid"><input class="m ov"></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><input class="oa"></div>
+<div class="grid"><input class="os"></div>
+<div class="grid"><input class="oh"></div>
+<div class="grid"><input class="ov"></div>
+
+<br>
+
+<div class="grid"><input class="m oa"></div>
+<div class="grid"><input class="m os"></div>
+<div class="grid"><input class="m oh"></div>
+<div class="grid"><input class="m ov"></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-005.html b/layout/reftests/css-grid/grid-item-overflow-stretch-005.html
new file mode 100644
index 000000000..33fe468d7
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-005.html
@@ -0,0 +1,77 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: stretching overflow!=visible items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <link rel="match" href="grid-item-overflow-stretch-005-ref.html">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px auto 3px / 7px auto 3px;
+ grid-gap: 5px;
+ border:1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border:1px solid;
+ -moz-appearance: none;
+ -webkit-appearance: none;
+ appearance: none;
+}
+
+.oa { overflow: auto; }
+.os { overflow: scroll; }
+.oh { overflow: hidden; }
+.m { margin: 17px 3px 5px 7px; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><input class="oa"></div>
+<div class="grid"><input class="os"></div>
+<div class="grid"><input class="oh"></div>
+<div class="grid"><input class=" "></div>
+
+<br>
+
+<div class="grid"><input class="m oa"></div>
+<div class="grid"><input class="m os"></div>
+<div class="grid"><input class="m oh"></div>
+<div class="grid"><input class="m "></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><input class="oa"></div>
+<div class="grid"><input class="os"></div>
+<div class="grid"><input class="oh"></div>
+<div class="grid"><input class=" "></div>
+
+<br>
+
+<div class="grid"><input class="m oa"></div>
+<div class="grid"><input class="m os"></div>
+<div class="grid"><input class="m oh"></div>
+<div class="grid"><input class="m "></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-006-ref.html b/layout/reftests/css-grid/grid-item-overflow-stretch-006-ref.html
new file mode 100644
index 000000000..71d4d4f54
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-006-ref.html
@@ -0,0 +1,54 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Reference: stretching overflow visible items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-flex;
+ width: 90px;
+ height: 40px;
+ padding: 7px 3px 3px 7px;
+ border: 1px solid;
+}
+
+.grid > * {
+ border: 1px solid;
+ margin: 5px;
+}
+
+.m { margin: 6px 8px 10px 12px; }
+.ma { margin: auto; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class=""><x></x></span></div>
+<div class="grid"><span class="m"><x></x></span></div>
+<div class="grid"><span class="ma" style="margin-left:5px"><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class="" style="flex:1"><x></x></span></div>
+<div class="grid"><span class="m" style="flex:1"><x></x></span></div>
+<div class="grid"><span class="ma" style="margin-top:5px"><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/grid-item-overflow-stretch-006.html b/layout/reftests/css-grid/grid-item-overflow-stretch-006.html
new file mode 100644
index 000000000..015c50fcc
--- /dev/null
+++ b/layout/reftests/css-grid/grid-item-overflow-stretch-006.html
@@ -0,0 +1,56 @@
+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: stretching overflow visible items</title>
+ <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1348857">
+ <link rel="match" href="grid-item-overflow-stretch-006-ref.html">
+ <style type="text/css">
+body,html { color:black; background:white; font:16px/1 monospace; padding:0; margin:0; }
+
+.grid {
+ display: inline-grid;
+ width: 100px;
+ height: 50px;
+ grid: 7px minmax(20px, auto) 3px / 7px minmax(20px, auto) 3px;
+ grid-gap: 5px;
+ border: 1px solid;
+}
+
+.grid > * {
+ grid-area: 2/2;
+ border: 1px solid;
+}
+
+.m { margin: 1px 3px 5px 7px; }
+.ma { margin: auto; }
+
+x { display:block; width:110px; height:5px; background:grey; }
+.h .grid x { width:5px; height:110px; }
+
+br { clear:both; }
+ </style>
+</head>
+<body>
+
+<div class="grid"><span class=""><x></x></span></div>
+<div class="grid"><span class="m"><x></x></span></div>
+<div class="grid"><span class="ma"><x></x></span></div>
+
+<br>
+
+<div class="h">
+
+<div class="grid"><span class=""><x></x></span></div>
+<div class="grid"><span class="m"><x></x></span></div>
+<div class="grid"><span class="ma"><x></x></span></div>
+
+<br>
+
+</div>
+
+</body>
+</html>
diff --git a/layout/reftests/css-grid/reftest.list b/layout/reftests/css-grid/reftest.list
index d85eefbd0..093e2faee 100644
--- a/layout/reftests/css-grid/reftest.list
+++ b/layout/reftests/css-grid/reftest.list
@@ -116,6 +116,12 @@ skip-if(Android) == grid-auto-min-sizing-percent-001.html grid-auto-min-sizing-p
== grid-item-auto-min-size-clamp-005.html grid-item-auto-min-size-clamp-005-ref.html
== grid-item-auto-min-size-clamp-006.html grid-item-auto-min-size-clamp-006-ref.html
== grid-item-auto-min-size-clamp-007.html grid-item-auto-min-size-clamp-007-ref.html
+== grid-item-overflow-stretch-001.html grid-item-overflow-stretch-001-ref.html
+== grid-item-overflow-stretch-002.html grid-item-overflow-stretch-002-ref.html
+== grid-item-overflow-stretch-003.html grid-item-overflow-stretch-003-ref.html
+== grid-item-overflow-stretch-004.html grid-item-overflow-stretch-004-ref.html
+== grid-item-overflow-stretch-005.html grid-item-overflow-stretch-005-ref.html
+== grid-item-overflow-stretch-006.html grid-item-overflow-stretch-006-ref.html
== grid-item-canvas-001.html grid-item-canvas-001-ref.html
skip-if(Android) == grid-item-button-001.html grid-item-button-001-ref.html
== grid-item-table-stretch-001.html grid-item-table-stretch-001-ref.html