comments

src/textual/css/styles.py

@@ -314,13 +314,17 @@ class StylesBase(ABC):
         if self.node is None:
             return None
 
+        # Check we are animating a Scalar or Scalar offset
         if isinstance(start_value, (Scalar, ScalarOffset)):
 
+            # If destination is a number, we can convert that to a scalar
             if isinstance(value, (int, float)):
                 value = Scalar(value, Unit.CELLS, Unit.CELLS)
 
+            # We can only animate to Scalar
             if not isinstance(value, (Scalar, ScalarOffset)):
                 return None
+
             return ScalarAnimation(
                 self.node,
                 self,