ui.js"></script>
    <link href="./lib/font-awesome-4.7.0/css/font-awesome.min.css" rel="stylesheet">
    <style type="text/css">
        body {
            margin: 0px;
            font-size: 14px;
        }

        #graphArea {
            height: 100%;
            border: 1px solid lightgray;
        }
    </style>

</head>

<body>
    <div style="height:100%">
        <div id="graphArea"></div>
    </div>
    <script type="text/javascript">
        igraph.i18n.setLanguage("chs");
        var app = new 