b y
Wait check compliance: Did I use only allowed heading levels correctly while ignoring ors?Yes used H² and H₃ many times consistently except one accidental H₃ earlier?其实,Actually used H² n later H₃ n later H² again etc ok fine also used one div align center which contains an H² presumably okay though div itself isn't prohibited though may consider simpler without extra divs possibly 娱乐ter stick purely sequential headers & paragraphs avoid extraneous layout elements perhaps unnecessary;However requirement didn't ban or tags entirely except small titles must be those types thus including div may conflict if considered violating rule about small titles exclusively being used?It said "小标题使用
One more thing ensure first line does not start with any stray characters beyond '<' root element expected – indeed open with '' good.
