index.html

<!DOCTYPE html>
<html lang="ko">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="./index.css" />
    <title>NEXTSTEP JavaScript Vending machine</title>
  </head>

  <body>
    <h1>🥤자판기🥤</h1>
    <nav>
      <button id="product-manage-menu" class="vending-machine-menu">
        상품 관리
      </button>
      <button id="vending-machine-manage-menu" class="vending-machine-menu">
        잔돈충전
      </button>
      <button id="product-purchase-menu" class="vending-machine-menu">
        상품 구매
      </button>
    </nav>

    <div id="app"></div>
    <script type="module" src="./js/index.js"></script>
  </body>
</html>