diff --git a/css/css-break/grid/grid-item-fragmentation-010.html b/css/css-break/grid/grid-item-fragmentation-010.html
new file mode 100644
index 00000000000000..bd57ef797ad2eb
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-010.html
@@ -0,0 +1,13 @@
+
+
+
+Tests that a grid-item with a min-content min-track grows due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-011.html b/css/css-break/grid/grid-item-fragmentation-011.html
new file mode 100644
index 00000000000000..e353537827bcb9
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-011.html
@@ -0,0 +1,13 @@
+
+
+
+Tests that a grid-item with auto track(s) grows due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-012.html b/css/css-break/grid/grid-item-fragmentation-012.html
new file mode 100644
index 00000000000000..c3b206e26c5943
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-012.html
@@ -0,0 +1,13 @@
+
+
+
+Tests that a grid-item with a flexible track grows due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-013.html b/css/css-break/grid/grid-item-fragmentation-013.html
new file mode 100644
index 00000000000000..a1e7106e239b12
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-013.html
@@ -0,0 +1,13 @@
+
+
+
+Tests that a grid-item with a minmax(0, auto) track inside an auto-grid grows due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-014.html b/css/css-break/grid/grid-item-fragmentation-014.html
new file mode 100644
index 00000000000000..09c95d1840fee9
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-014.html
@@ -0,0 +1,14 @@
+
+
+
+Tests that a grid-item with a minmax(0, auto) track inside a non-auto-grid *doesn't* grow due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-015.html b/css/css-break/grid/grid-item-fragmentation-015.html
new file mode 100644
index 00000000000000..6dd82de5822e3d
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-015.html
@@ -0,0 +1,13 @@
+
+
+
+Tests that a grid-item with a minmax(0, 1fr) track inside an auto-grid grows due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-016.html b/css/css-break/grid/grid-item-fragmentation-016.html
new file mode 100644
index 00000000000000..c16f740bd51dab
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-016.html
@@ -0,0 +1,14 @@
+
+
+
+Tests that a grid-item with a minmax(0, 1fr) track inside a non-auto-grid *doesn't* grow due to fragmentation.
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
+
diff --git a/css/css-break/grid/grid-item-fragmentation-017.html b/css/css-break/grid/grid-item-fragmentation-017.html
new file mode 100644
index 00000000000000..a5c1abeb122339
--- /dev/null
+++ b/css/css-break/grid/grid-item-fragmentation-017.html
@@ -0,0 +1,14 @@
+
+
+
+Tests that a grid-item with a fixed track *doesn't* grow due to fragmentation.
+
Test passes if there is a filled green square and no red.