refac: navbar styling

src/lib/components/chat/Chat.svelte

@@ -1926,7 +1926,7 @@
 			{initNewChat}
 		/>
 
-		<PaneGroup direction="horizontal" class="w-full h-full">
+		<PaneGroup direction="horizontal" class="w-full h-ful pt-2">
 			<Pane defaultSize={50} class="h-full flex w-full relative">
 				{#if $banners.length > 0 && !history.currentId && !$chatId && selectedModels.length <= 1}
 					<div class="absolute top-3 left-0 right-0 w-full z-20">

src/lib/components/chat/Messages.svelte

@@ -308,7 +308,7 @@
 	};
 </script>
 
-<div class="h-full flex">
+<div class="h-full flex pt-8">
 	{#if Object.keys(history?.messages ?? {}).length == 0}
 		<Placeholder {selectedModels} bind:prompt />
 	{:else}