Improve scrolling experience by hiding all scrollbars

Hide all scrollbars globally using CSS and remove specific scrollbar styles from the SimpleCarousel component.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 2eb1084e-b728-4449-9231-f1665924c8d5
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/2eb1084e-b728-4449-9231-f1665924c8d5/yexZbDm

client/src/components/simple-carousel.tsx

@@ -125,11 +125,10 @@ export default function SimpleCarousel({ category, onVideoClick }: SimpleCarouse
         {/* Scroll container */}
         <div 
           ref={scrollContainerRef}
-          className="overflow-x-auto scrollbar-hide"
+          className="overflow-x-auto"
           style={{ 
             scrollbarWidth: 'none', 
-            msOverflowStyle: 'none',
-            WebkitScrollbar: { display: 'none' }
+            msOverflowStyle: 'none'
           }}
         >
           <div className="flex space-x-4 pb-4 w-max">