diff --git a/after/syntax/css/link-params-1.vim b/after/syntax/css/link-params-1.vim
new file mode 100644
index 0000000..5b906dc
--- /dev/null
+++ b/after/syntax/css/link-params-1.vim
@@ -0,0 +1,2 @@
+syn keyword cssFontProp contained link-parameters
+syn region cssFunction contained matchgroup=cssFunctionName start="\<param\s*(" end=")" oneline keepend
diff --git a/test/test.css b/test/test.css
index 375e71d..87ee4d6 100644
--- a/test/test.css
+++ b/test/test.css
@@ -747,6 +747,11 @@ template {
   display: last-baseline;
 }
 
+.link-params-1 {
+  link-parameters: auto;
+  display: param(--color, green);
+}
+
 .lists-3::marker {
   marker-side: auto;
   counter-set: auto;