Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/css/css-break/flexbox/multi-line-row-flex-fragmentation-057.html b/css/css-break/flexbox/multi-line-row-flex-fragmentation-057.html
new file mode 100644
index 00000000000000..c20e684b45290d
--- /dev/null
+++ b/css/css-break/flexbox/multi-line-row-flex-fragmentation-057.html
@@ -0,0 +1,40 @@
+
+
+ Multi-line row flex fragmentation with items in the same row ending layout
+ in different fragmentainers w/ vertical writing-mode.
+
+
+
+
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/css/css-break/flexbox/single-line-column-flex-fragmentation-044.html b/css/css-break/flexbox/single-line-column-flex-fragmentation-044.html
new file mode 100644
index 00000000000000..2ef4c988ec5254
--- /dev/null
+++ b/css/css-break/flexbox/single-line-column-flex-fragmentation-044.html
@@ -0,0 +1,20 @@
+
+
+ Tests that flex-items get pushed down due to a previous multicol flex-item
+ expanding as a result of fragmentation w/ vertical writing-mode.
+
+
+
+
Test passes if there is a filled green square and no red.
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/css/css-break/flexbox/single-line-row-flex-fragmentation-030.html b/css/css-break/flexbox/single-line-row-flex-fragmentation-030.html
new file mode 100644
index 00000000000000..a70ad1473eaf27
--- /dev/null
+++ b/css/css-break/flexbox/single-line-row-flex-fragmentation-030.html
@@ -0,0 +1,22 @@
+
+
+ Single-line row flex fragmentation: If the fragmentainer is out of space
+ but a flex row should break before if it has content w/ vertical
+ writing-mode.
+
+
+
+
+
Test passes if there is a filled green square and no red.
+
+
+
+
+
+
+
+
diff --git a/css/css-break/flexbox/single-line-row-flex-fragmentation-031.html b/css/css-break/flexbox/single-line-row-flex-fragmentation-031.html
new file mode 100644
index 00000000000000..1bda683312ee42
--- /dev/null
+++ b/css/css-break/flexbox/single-line-row-flex-fragmentation-031.html
@@ -0,0 +1,30 @@
+
+
+ Single-line row flex fragmentation: OOF static position and alignment
+ w/ vertical writing-mode.
+
+
+
+
+
Test passes if there is a filled green square and no red.