Remove unnecessary 'relative' positioning from sticky headers

Removes the 'relative' class from the header div in FolxStadlPage, VideoPage, home, and not-found pages.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 051a65da-1176-4478-a61c-c662f2a15536
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/051a65da-1176-4478-a61c-c662f2a15536/ltgXnRK

client/src/pages/home.tsx

@@ -75,7 +75,7 @@ export default function Home() {
   return (
     <div style={{minHeight: '100vh', background: 'linear-gradient(135deg, hsl(250, 50%, 15%) 0%, hsl(240, 30%, 25%) 100%)', color: 'white'}}>
       {/* STICKY HEADER */}
-      <div className="header-sticky bg-transparent relative overflow-hidden">
+      <div className="header-sticky bg-transparent overflow-hidden">
         <div className="max-w-7xl mx-auto px-4 py-4">
           <div className="flex items-center justify-between">
             {/* Left side - Logo */}