<details>
<summary>사내 공지사항</summary>
<ul>
<li>1. 공지사항 1번입니다.</li>
<li>2. 공지사항 2번입니다.</li>
<li>3. 공지사항 3번입니다.</li>
</ul>
</details>
<details>
<summary>사내 최고봉</summary>
<div>사장님</div>
</details>
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