correct post-display margin

core/style.css

@@ -1247,7 +1247,7 @@ body.forum.thread table.board-display {
 body.forum.thread table.post-display {
 	background: var(--post);
 	border: var(--post-border);
-	margin: 8px 0px;
+	margin: 8px 4px;
 	table-layout: fixed;
 }