index.html

<html>
<head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>RNDC</title> 
    <style>
        html, body {
            height: 100%;
            margin: 0;
        }
        h1 {
            font-size: 16px;
            font-family: Segoe UI;
            line-height: 20px;
            color: whitesmoke;
            display: table-cell;
            padding: 13px 0px 0px 20px;
        }
        .heading {
            background-color: black;
            height: 50px;
        }
        .main {
            margin: 18px;
            border-radius: 4px;
        }

        div[role="form"]{
            background-color: black;
        }        
        #webchat {
            position: fixed;
            height: calc(100% - 50px);
            width: 100%;
            top: 50px;
            overflow: hidden;
        }
      </style>
</head>
<body>
    <div>
        <div class="heading">
            <h1>Electra</h1>
        </div>
        <div id="webchat" role="main"></div>
    </div>    
  <script src="https://cdn.botframework.com/botframework-webchat/latest/webchat.js"></script>
  <script>
        const styleOptions = {
           hideUploadButton: true
        };

        var BOT_ID = "d7134f5e-6c5a-4f59-b040-9be5c39ed0a4"; 
        var theURL = "https://powerva.microsoft.com/api/botmanagement/v1/directline/directlinetoken?botId=" + BOT_ID;

        const store = window.WebChat.createStore(
           {},
           ({ dispatch }) => next => action => {
               if (action.type === "DIRECT_LINE/CONNECT_FULFILLED") {
                  dispatch({
                      meta: {
                           method: "keyboard",
                       },
                       payload: {
                           activity: {
                                 channelData: {
                                      postBack: true,
                                 },
                                  name: 'startConversation',
                                  type: "event"
                             },
                        },
                        type: "DIRECT_LINE/POST_ACTIVITY",
                   });
             }
             return next(action);
          }
       );
       fetch(theURL)
            .then(response => response.json())
            .then(conversationInfo => {
                window.WebChat.renderWebChat(
                    {
                        directLine: window.WebChat.createDirectLine({
                            token: conversationInfo.token,
                        }),
                        store: store,
                        styleOptions: styleOptions
                    },
                    document.getElementById('webchat')
                );
            })
            .catch(err => console.error("An error occurred: " + err));
    </script>
  </body>
</