サイドドロワー(ハンバーガー)

<div class="d11-03-07-phone">
          <div class="d11-03-07-screen">
            <div class="d11-03-07-bar">
              <button class="d11-03-07-burger" id="d11-03-07-burger" aria-label="メニュー"><span></span><span></span><span></span></button>
              <span class="d11-03-07-logo">MySite</span>
            </div>
            <div class="d11-03-07-body">コンテンツ</div>
            <div class="d11-03-07-scrim" id="d11-03-07-scrim"></div>
            <nav class="d11-03-07-drawer" id="d11-03-07-drawer">
              <p class="d11-03-07-dh">メニュー</p>
              <a>ホーム</a><a>記事一覧</a><a>お知らせ</a><a>お問い合わせ</a>
            </nav>
          </div>
        </div>

.d11-03-07-phone{width:190px;height:240px;border-radius:24px;border:6px solid #1f2937;background:#fff;position:relative;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.15)}
        .d11-03-07-screen{position:absolute;inset:0;background:#f8fafc}
        .d11-03-07-bar{position:absolute;top:0;left:0;right:0;height:42px;background:#4f46e5;display:flex;align-items:center;gap:10px;padding:0 12px;z-index:2}
        .d11-03-07-burger{width:22px;height:16px;border:0;background:none;padding:0;cursor:pointer;position:relative}
        .d11-03-07-burger span{position:absolute;left:0;right:0;height:2px;background:#fff;border-radius:2px;transition:.3s}
        .d11-03-07-burger span:nth-child(1){top:0}.d11-03-07-burger span:nth-child(2){top:7px}.d11-03-07-burger span:nth-child(3){top:14px}
        .d11-03-07-logo{color:#fff;font-size:13px;font-weight:700}
        .d11-03-07-body{position:absolute;top:42px;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;color:#94a3b8;font-size:13px}
        .d11-03-07-scrim{position:absolute;inset:0;background:rgba(15,23,42,.4);opacity:0;pointer-events:none;transition:opacity .3s;z-index:3}
        .d11-03-07-scrim.d11-03-07-on{opacity:1;pointer-events:auto}
        .d11-03-07-drawer{position:absolute;top:0;left:0;bottom:0;width:130px;background:#fff;box-shadow:4px 0 16px rgba(0,0,0,.2);transform:translateX(-100%);transition:transform .32s cubic-bezier(.2,.8,.2,1);z-index:4;padding:14px 12px}
        .d11-03-07-drawer.d11-03-07-open{transform:translateX(0)}
        .d11-03-07-dh{margin:0 0 10px;font-size:11px;color:#94a3b8;font-weight:700}
        .d11-03-07-drawer a{display:block;padding:8px 6px;font-size:12px;color:#334155;border-bottom:1px solid #f1f5f9;cursor:pointer}

(function(){
        var root=document.getElementById('item-11-03-07');if(!root)return;
        var b=root.querySelector('#d11-03-07-burger'),dr=root.querySelector('#d11-03-07-drawer'),sc=root.querySelector('#d11-03-07-scrim');
        function toggle(v){dr.classList.toggle('d11-03-07-open',v);sc.classList.toggle('d11-03-07-on',v);}
        b.addEventListener('click',function(){toggle(!dr.classList.contains('d11-03-07-open'));});
        sc.addEventListener('click',function(){toggle(false);});
      })();