上からスライドダウンするメニューパネル

<div class="d03-08-03-frame">
          <div class="d03-08-03-bar">
            <span class="d03-08-03-logo">Media</span>
            <button class="d03-08-03-burger" type="button" aria-label="メニューを開く" aria-expanded="false">
              <span></span><span></span><span></span>
            </button>
          </div>
          <div class="d03-08-03-panel">
            <a href="#">ニュース</a>
            <a href="#">特集記事</a>
            <a href="#">ランキング</a>
            <a href="#">お問い合わせ</a>
          </div>
        </div>

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        .d03-08-03-bar{position:relative;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid #eef2f7;background:#fff}
        .d03-08-03-logo{font-weight:800;font-size:13px;color:#0f766e;letter-spacing:.02em}
        .d03-08-03-burger{position:relative;width:28px;height:28px;border:0;background:transparent;cursor:pointer;padding:0}
        .d03-08-03-burger span{position:absolute;left:4px;width:20px;height:2.4px;background:#1f2937;border-radius:2px;transition:transform .3s,opacity .3s,top .3s}
        .d03-08-03-burger span:nth-child(1){top:8px}
        .d03-08-03-burger span:nth-child(2){top:14px}
        .d03-08-03-burger span:nth-child(3){top:20px}
        .d03-08-03-burger.open span:nth-child(1){top:14px;transform:rotate(45deg)}
        .d03-08-03-burger.open span:nth-child(2){opacity:0}
        .d03-08-03-burger.open span:nth-child(3){top:14px;transform:rotate(-45deg)}
        .d03-08-03-panel{position:absolute;left:0;right:0;top:57px;bottom:0;z-index:2;background:#0f766e;display:flex;flex-direction:column;gap:4px;padding:14px 18px;transform:translateY(-100%);transition:transform .4s cubic-bezier(.65,0,.35,1)}
        .d03-08-03-frame.open .d03-08-03-panel{transform:translateY(0)}
        .d03-08-03-panel a{color:#f0fdfa;text-decoration:none;font-size:13.5px;font-weight:600;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.14)}
        .d03-08-03-panel a:hover{color:#5eead4}

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        var frame=root.querySelector('.d03-08-03-frame');
        burger.addEventListener('click',function(){
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