*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,sans-serif}body{background:#f4f6f9;color:#333;line-height:1.5}nav{background:#2d89ef;color:#fff;padding:12px 20px;display:flex;gap:20px}nav a{color:#fff;text-decoration:none;font-weight:700}nav a:hover{text-decoration:underline}.container{max-width:900px;margin:20px auto;padding:20px;background:#fff;border-radius:10px;box-shadow:0 4px 10px #0000001a}input,select,button{padding:8px 12px;margin:5px;border-radius:6px;border:1px solid #ccc}button{background:#2d89ef;color:#fff;border:none;cursor:pointer;transition:.2s}button:hover{background:#1b5fbd}ul{margin-top:15px}li{background:#f9fafc;padding:10px;margin-bottom:8px;border-radius:6px;display:flex;justify-content:space-between;align-items:center}