style(customCursor.scss): reorganize code to improve readability and maintainability

The changes in this commit reorganize the code in the _customCursor.scss file to improve readability and maintainability. The changes include:

- Moving the .cursorInner selector inside the .customCursor selector for better organization.
- Adding a new line before the .cursorInner selector for better separation.
- Adding a new line after the mix-blend-mode property for better separation.
- Adding a new line after the .active selector for better separation.

These changes aim to make the code easier to understand and modify in the future.

assets/scss/_partial/_customCursor.scss

@@ -10,12 +10,12 @@
 
   color: white;
   mix-blend-mode: difference;
+
+  .cursorInner {
+    transform: translate3d(-50%, -50%, 0);
+  }
 }
 
 .active {
   display: block;
 }
-
-.cursorInner {
-  transform: translate3d(-50%, -50%, 0);
-}