edia (max-width: 720px) {
            .container {
                width: 90vw;
                height: 52.7vw;
            }
        }
    </style>
</head>
<body class="page">
<div class="root">

    <div class="container-shell">
        <div>
            <div class="container" id="container1"></div>
            <div class="container" id="container2"></div>
            <div class="container" id="container3"></div>
        </div>
        <div>
            <div class="container" id="contain