diff --git a/.changeset/slimy-apes-help.md b/.changeset/slimy-apes-help.md
new file mode 100644
index 00000000..4bcce24f
--- /dev/null
+++ b/.changeset/slimy-apes-help.md
@@ -0,0 +1,5 @@
+---
+"@devup-ui/wasm": patch
+---
+
+Postfix convert to kebab
diff --git a/libs/css/src/lib.rs b/libs/css/src/lib.rs
index 199df6a7..04387686 100644
--- a/libs/css/src/lib.rs
+++ b/libs/css/src/lib.rs
@@ -67,7 +67,7 @@ impl From<&str> for StyleSelector {
                 &s[1..]
             ))
         } else {
-            Postfix(value.to_string())
+            Postfix(to_kebab_case(value))
         }
     }
 }
@@ -564,10 +564,18 @@ mod tests {
     #[test]
     fn test_style_selector() {
         assert_eq!(StyleSelector::from("hover"), Postfix("hover".to_string()));
+        assert_eq!(
+            StyleSelector::from("focusVisible"),
+            Postfix("focus-visible".to_string())
+        );
         assert_eq!(
             StyleSelector::from("groupHover"),
             Dual("*[role=group]".to_string(), "hover".to_string())
         );
+        assert_eq!(
+            StyleSelector::from("groupFocusVisible"),
+            Dual("*[role=group]".to_string(), "focus-visible".to_string())
+        );
         assert_eq!(
             StyleSelector::from("group1"),
             Dual("*[role=group]".to_string(), "1".to_string())
diff --git a/libs/sheet/src/lib.rs b/libs/sheet/src/lib.rs
index c7decf95..ca88ef6d 100644
--- a/libs/sheet/src/lib.rs
+++ b/libs/sheet/src/lib.rs
@@ -231,6 +231,11 @@ mod tests {
         sheet.add_property("test", "background-color", 1, "red", None, false);
         sheet.add_property("test", "background", 1, "some", None, false);
         assert_debug_snapshot!(sheet.create_css());
+        //
+        // let mut sheet = StyleSheet::default();
+        // sheet.add_property("test", "background-color", 1, "red", Some(&StyleSelector::Postfix("hover".to_string())), false);
+        // sheet.add_property("test", "background", 1, "some", Some(&StyleSelector::Postfix("focus".to_string())), false);
+        // assert_debug_snapshot!(sheet.create_css());
     }
     #[test]
     fn test_create_css_with_basic_sort_test() {