fixed USS warning

com.unity.perception/Editor/Randomization/Uss/RunInUnitySimulationWindowStyles.uss

 }
 
 .sim-window__label-prev-result {
-    padding: 2 2 0 1; /*top, right, bottom, left*/
-    margin: 1 3 1 3;
+    padding: 2px 2px 0 1px; /*top, right, bottom, left*/
+    margin: 1px 3px 1px 3px;
 }