diff --git a/src/components/Background.tsx b/src/components/Background.tsx
index c2dc951..bcb6b46 100644
--- a/src/components/Background.tsx
+++ b/src/components/Background.tsx
@@ -16,16 +16,17 @@ const Background = () => {
     windowHeight.current = window.innerHeight
   }
 
-  const mouseMoveEvent = (e: MouseEvent) => {
-    const x = e.pageX - windowWidth.current / 2
-    const y = e.pageY - windowHeight.current / 2
-    // api.start({ x, y })
-  }
+  // const mouseMoveEvent = (e: MouseEvent) => {
+  //   // to be improved for performance
+  //   // const x = e.pageX - windowWidth.current / 2
+  //   // const y = e.pageY - windowHeight.current / 2
+  //   // api.start({ x, y })
+  // }
   useEffect(() => {
-    document.addEventListener("mousemove", mouseMoveEvent)
+    // document.addEventListener("mousemove", mouseMoveEvent)
     document.addEventListener("resize", onResizeHandler)
     return () => {
-      document.removeEventListener("mousemove", mouseMoveEvent)
+      // document.removeEventListener("mousemove", mouseMoveEvent)
       document.removeEventListener("resize", onResizeHandler)
     }
     // eslint-disable-next-line
diff --git a/src/components/NotebookViewer.tsx b/src/components/NotebookViewer.tsx
index dedb964..3bb1679 100644
--- a/src/components/NotebookViewer.tsx
+++ b/src/components/NotebookViewer.tsx
@@ -13,7 +13,7 @@ export interface NotebookViewerProps {
 }
 
 const splitTextWithCellInfo = (
-  text: string
+  text: string,
 ): Array<{ cellNumber: number; cellType: string; content: string }> => {
   const cells: Array<{
     cellNumber: number
@@ -98,7 +98,7 @@ const NotebookViewer: React.FC<NotebookViewerProps> = ({
           </Alert>
         </Col>
         <Col lg="5">
-          <MarkdownSnipped className="m-0" value={notebook.excerpt} />
+          <MarkdownSnipped className="m-0" value={excerpt} />
         </Col>
       </Row>
       <Row className="mb-3">