diff --git a/after/syntax/css/mixins-1.vim b/after/syntax/css/mixins-1.vim
new file mode 100644
index 0000000..81b6371
--- /dev/null
+++ b/after/syntax/css/mixins-1.vim
@@ -0,0 +1,2 @@
+syn keyword cssFontProp contained result
+syn match cssFontDescriptor "@function\>" nextgroup=cssFontDescriptorBlock skipwhite skipnl
diff --git a/test/test.css b/test/test.css
index d196b4b..02a8b14 100644
--- a/test/test.css
+++ b/test/test.css
@@ -763,6 +763,10 @@ mask {
   mask-type: auto;
 }
 
+@function mixins-1() {
+	result: auto;
+}
+
 .motion-1 {
   offset-path: auto;
   offset-distance: auto;