diff --git a/after/syntax/css/overscroll-1.vim b/after/syntax/css/overscroll-1.vim
new file mode 100644
index 0000000..c066b70
--- /dev/null
+++ b/after/syntax/css/overscroll-1.vim
@@ -0,0 +1 @@
+syn match cssFontProp contained "\<overscroll-behavior\(-\(block\|inline\|x\|y\)\)\=\>"
diff --git a/test/test.css b/test/test.css
index c1b7100..6cd34b8 100644
--- a/test/test.css
+++ b/test/test.css
@@ -612,6 +612,14 @@ mask {
   display: fragments;
 }
 
+.overscroll-1 {
+  overscroll-behavior: auto;
+  overscroll-behavior-block: auto;
+  overscroll-behavior-inline: auto;
+  overscroll-behavior-x: auto;
+  overscroll-behavior-y: auto;
+}
+
 .page-3 {
   marks: auto;
   bleed: auto;