fix(curriculum): change type-checking question with new one (#64525)

Co-authored-by: majestic-owl448 <26656284+majestic-owl448@users.noreply.github.com>

curriculum/challenges/english/blocks/quiz-css-variables/66ed9018f45ce3ece4053eb9.md

@@ -763,31 +763,31 @@ Only applies within `.dark-theme` scope.
 
 #### --text--
 
-Which part of this `@property` declaration enforces type checking?
+In the following CSS, what happens if a user tries to assign an invalid value to `--padding` (for example, a color instead of a length)?
 
 ```css
-@property --my-color {
-  syntax: "<color>";
+@property --padding {
+  syntax: "<length>";
+  initial-value: 0px;
   inherits: false;
-  initial-value: red;
 }
 ```
 
 #### --distractors--
 
-`initial-value`
+The browser accepts the value but ignores it during layout.
 
 ---
 
-`inherits`
+The browser throws a runtime error.
 
 ---
 
-`--my-color`
+The browser converts the value to a valid length automatically.
 
 #### --answer--
 
-`syntax`
+The browser falls back to the property's initial value.
 
 ### --question--