diff --git a/sample_files/css_after.css b/sample_files/css_after.css
new file mode 100644
index 000000000..a2bb31fdc
--- /dev/null
+++ b/sample_files/css_after.css
@@ -0,0 +1,14 @@
+/* hello
+world */
+.bar {
+  margin: 0;
+}
+
+.foo1 {
+  margin: 0;
+  color: green;
+}
+
+.baz {
+  color: blue;
+}
diff --git a/sample_files/css_before.css b/sample_files/css_before.css
new file mode 100644
index 000000000..6e9e9ad7d
--- /dev/null
+++ b/sample_files/css_before.css
@@ -0,0 +1,13 @@
+/* hello
+world */
+.foo1 {
+  margin: 0;
+}
+
+.bar {
+  margin: 0;
+}
+
+.baz {
+  color: red;
+}