fix(ui): added backdrop filter for nav

Co-authored-by: Sargam <[email protected]>

src/components/Sidebar.tsx

@@ -197,7 +197,7 @@ export function Sidebar({
             variants={sidebarVariants}
             className="fixed right-0 top-0 z-[99999] flex h-screen w-full flex-col gap-4 overflow-y-auto rounded-r-lg border-l border-primary/10 bg-neutral-50 dark:bg-neutral-900 md:max-w-[30vw]"
           >
-            <div className="sticky top-0 z-10 flex items-center justify-between border-b border-primary/10 p-5 bg-neutral-50 dark:bg-neutral-900">
+            <div className="sticky top-0 z-10 flex items-center justify-between border-b border-primary/10 p-5 backdrop-blur-md">
               <h4 className="text-xl font-bold tracking-tighter text-primary lg:text-2xl">
                 Course Content
               </h4>