<div class="accordion_ttl">click!</div> <div class="accordion_content"> hogehoge foobar </div> <div class="accordion_ttl">click2!</div> <div class="accordion_content"> hogehoge foobar </div> <div class="accordion_ttl">click3!</div> <div class="accordion_content"> hogehoge foobar </div>こんなhtmlが複数あってい…