diff --git a/layout/style/res/ua.css b/layout/style/res/ua.css
index d217007e4e80..9bff80d02084 100644
--- a/layout/style/res/ua.css
+++ b/layout/style/res/ua.css
@@ -61,6 +61,7 @@
grid-row-end: inherit;
order: inherit;
outline: inherit;
+ outline-offset: inherit;
column-span: inherit; /* needed if
has "column-span:all" */
contain: inherit; /* needed if table has 'contain:layout' or 'paint' */
}
diff --git a/testing/web-platform/tests/css/css-ui/outline-offset-table-001-notref.html b/testing/web-platform/tests/css/css-ui/outline-offset-table-001-notref.html
new file mode 100644
index 000000000000..aafa2b053cb3
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-offset-table-001-notref.html
@@ -0,0 +1,11 @@
+
+CSS Rest Reference
+
+
diff --git a/testing/web-platform/tests/css/css-ui/outline-offset-table-001.html b/testing/web-platform/tests/css/css-ui/outline-offset-table-001.html
new file mode 100644
index 000000000000..4b6f46949b7d
--- /dev/null
+++ b/testing/web-platform/tests/css/css-ui/outline-offset-table-001.html
@@ -0,0 +1,13 @@
+
+outline-offset applies to tables
+
+
+
+
+
+
+