1 files changed, 18 insertions, 0 deletions
diff --git a/layout/reftests/css-valid/button/style.css b/layout/reftests/css-valid/button/style.css
new file mode 100644
index 0000000000..23ea98031c
--- /dev/null
+++ b/layout/reftests/css-valid/button/style.css
@@ -0,0 +1,18 @@
+/* Override default style */
+button:invalid {
+  box-shadow: none;
+}
+
+button.notvalid {
+  background-color: green;
+}
+button.notvalid:valid {
+  background-color: red;
+}
+
+button.valid {
+  background-color: red;
+}
+button.valid:valid {
+  background-color: green;
+}