Update style.css

style.css

@@ -1,5 +1,5 @@
 .gradio-container {
-    background: url('https://github.com/tywei08/PySpark_Essentials/blob/master/IMG_8711.jpg?raw=true');
+    background: url('https://github.com/tywei08/PySpark_Essentials/blob/master/IMG_8714.jpg?raw=true');
 }
 .centered-image {
     display: block;