Update style.css

style.css

@@ -7,8 +7,11 @@
   height:120px;
 }
 gradio-app{
-  background:url("file=bg.png") !important;
-} 
+  background: rgb(153,0,255);
+  background-image: radial-gradient(circle, rgba(153,0,255,1) 0%, rgba(9,15,121,1) 96%, rgba(2,0,36,1) 100%) !important;
+  height: 100%;
+  width: 100%;
+}
 #row-flex {
   display: flex;
   align-items: center;