chore: Update privacy policy markdown styles and add back button to theme page

src/components/marketplace.tsx

@@ -13,7 +13,7 @@ export default function MarketplacePage() {
   }, []);
 
   return (
-    <div className="flex flex-col w-1/2 items-center justify-center h-full mt-36">
+    <div className="flex flex-col w-full p-5 lg:w-1/2 lg:p-0 items-center justify-center h-full mt-36">
       <div className="mx-auto w-full text-center">
         <h1 className="text-7xl font-bold">Themes Marketplace</h1>
         <ThemesSearch input={searchInput} setInput={setSearchInput} />