add markdown formatting with code support

src/routes/blog/[slug]/edit/+page.svelte

@@ -52,7 +52,9 @@
 			name="content"
 			bind:value={content}
 			rows="20"
-			class="rounded border border-gray-300 px-3 py-2 font-mono text-sm outline-none"></textarea>
+			class="rounded border border-gray-300 px-3 py-2 font-body text-base leading-relaxed text-gray-900 outline-none"
+		></textarea>
+		<p class="-mt-2 text-xs text-gray-400">Supports Markdown formatting.</p>
 
 		<div class="flex justify-end gap-2">
 			<button