Changed background to white and add an effect on it

rnd/autogpt_builder/src/app/build/page.tsx

@@ -8,7 +8,7 @@ export default function Home() {
 
   return (
       <FlowEditor
-        className="flow-container w-full min-h-[86vh] border border-gray-300 dark:border-gray-700 rounded-lg bg-secondary"
+        className="flow-container w-full min-h-[86vh] border border-gray-300 dark:border-gray-700 rounded-lg"
         flowID={query.get("flowID") ?? query.get("templateID") ?? undefined}
         template={!!query.get("templateID")}
       />

rnd/autogpt_builder/src/components/Flow.tsx

@@ -18,6 +18,7 @@ import ReactFlow, {
   EdgeTypes,
   MarkerType,
   Controls,
+  Background,
 } from "reactflow";
 import "reactflow/dist/style.css";
 import CustomNode, { CustomNodeData } from "./CustomNode";
@@ -882,6 +883,7 @@ const FlowEditor: React.FC<{
         onNodeDragStop={onNodesChangeEnd}
       >
         <Controls />
+        <Background />
         <ControlPanel className="absolute z-10" controls={editorControls}>
           <BlocksControl blocks={availableNodes} addBlock={addNode} />
           <SaveControl