diff --git a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/data/action/Theme.kt b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/data/action/Theme.kt
index a48f6d0..077389c 100644
--- a/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/data/action/Theme.kt
+++ b/core/src/commonMain/kotlin/cn/rdlevel/rdkt/core/data/action/Theme.kt
@@ -357,13 +357,6 @@ public sealed interface VariedTheme<E : Enum<E>> : Theme {
     public var variant: E
 }
 
-@Serializable
-public data class ThemePosition(
-    var x: Int = 0,
-    var duration: Double = 0.0,
-    var ease: Easing = Easing.LINEAR,
-)
-
 public sealed interface PositionedTheme : Theme {
     public var enablePosition: Boolean