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Updates
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53
light-chat/index.html
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53
light-chat/index.html
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta content="width=device-width, initial-scale=1.0" name="viewport" />
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<title>JS-Waku light chat</title>
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<link rel="stylesheet" href="./style.css" />
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<link rel="apple-touch-icon" href="./favicon.png" />
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<link rel="manifest" href="./manifest.json" />
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<link rel="icon" href="./favicon.ico" />
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</head>
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<body>
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<div class="content">
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<div class="header">
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<h3>Status: <span id="status"></span></h3>
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<details>
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<summary>Peer's information</summary>
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<h4>Content topic</h4>
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<p id="contentTopic"></p>
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<h4>Local Peer Id</h4>
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<p id="localPeerId"></p>
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<h4>Remote Peer Id</h4>
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<p id="remotePeerId"></p>
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<h4>Remote peer's multiaddr</h4>
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<p id="remoteMultiAddr"></p>
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</details>
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</div>
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<div id="messages"></div>
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<div class="footer">
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<div class="inputArea">
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<input type="text" id="nickText" placeholder="Nickname" />
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<textarea id="messageText" placeholder="Message"></textarea>
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</div>
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<div class="controls">
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<button id="send">Send</button>
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<button id="exit">Exit chat</button>
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</div>
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</div>
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</div>
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<script src="//cdn.jsdelivr.net/npm/protobufjs@7.X.X/dist/protobuf.min.js"></script>
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<script type="module" src="./index.js"></script>
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</body>
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</html>
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171
light-chat/index.js
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light-chat/index.js
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import * as utils from "https://unpkg.com/@waku/byte-utils@0.0.2/bundle/index.js";
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import * as wakuCreate from "https://unpkg.com/@waku/create@0.0.5/bundle/index.js";
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import {
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waitForRemotePeer,
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createDecoder,
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createEncoder,
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} from "https://unpkg.com/@waku/core@0.0.7/bundle/index.js";
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const MULTI_ADDR =
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"/dns4/node-01.ac-cn-hongkong-c.wakuv2.test.statusim.net/tcp/443/wss/p2p/16Uiu2HAkvWiyFsgRhuJEb9JfjYxEkoHLgnUQmr1N5mKWnYjxYRVm";
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const CONTENT_TOPIC = "/toy-chat/2/huilong/proto";
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const PROTOCOLS = ["filter", "lightpush"];
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const ui = initUI();
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runApp(ui).catch((err) => {
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console.error(err);
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ui.setStatus(`error: ${err.message}`, "error");
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});
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async function runApp(ui) {
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ui.setStatus("connecting...", "progress");
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const { info, sendMessage, unsubscribeFromMessages } = await initWakuContext({
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protocols: PROTOCOLS,
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multiAddr: MULTI_ADDR,
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contentTopic: CONTENT_TOPIC,
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onMessageReceived: ui.renderMessage,
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});
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ui.setStatus("connected", "success");
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ui.setLocalPeer(info.localPeerId);
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ui.setRemotePeer(info.remotePeerIds);
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ui.setRemoteMultiAddr(info.multiAddr);
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ui.setContentTopic(info.contentTopic);
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ui.onSendMessage(sendMessage);
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ui.onExit(async () => {
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ui.setStatus("disconnecting...", "progress");
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await unsubscribeFromMessages();
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ui.setStatus("disconnected", "terminated");
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ui.resetMessages();
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});
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}
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async function initWakuContext({
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multiAddr,
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protocols,
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contentTopic,
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onMessageReceived,
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}) {
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const Decoder = createDecoder(contentTopic);
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const Encoder = createEncoder(contentTopic);
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const ChatMessage = new protobuf.Type("ChatMessage")
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.add(new protobuf.Field("timestamp", 1, "uint64"))
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.add(new protobuf.Field("nick", 2, "string"))
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.add(new protobuf.Field("text", 3, "bytes"));
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const node = await wakuCreate.createLightNode({ defaultBootstrap: true });
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await node.start();
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await waitForRemotePeer(node, protocols);
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// Set a filter by using Decoder for a given ContentTopic
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const unsubscribeFromMessages = await node.filter.subscribe(
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[Decoder],
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(wakuMessage) => {
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const messageObj = ChatMessage.decode(wakuMessage.payload);
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onMessageReceived({
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...messageObj,
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text: utils.bytesToUtf8(messageObj.text),
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});
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}
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);
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const localPeerId = node.libp2p.peerId.toString();
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const remotePeers = await node.libp2p.peerStore.all();
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const remotePeerIds = remotePeers.map((peer) => peer.id.toString());
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return {
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unsubscribeFromMessages,
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info: {
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multiAddr,
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contentTopic,
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localPeerId,
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remotePeerIds,
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},
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sendMessage: async ({ text, nick }) => {
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if (!text || !nick) {
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return;
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}
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const protoMessage = ChatMessage.create({
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nick,
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timestamp: Date.now(),
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text: utils.utf8ToBytes(text),
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});
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await node.lightPush.push(Encoder, {
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payload: ChatMessage.encode(protoMessage).finish(),
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});
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},
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};
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}
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// UI adapter
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function initUI() {
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const exitButton = document.getElementById("exit");
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const sendButton = document.getElementById("send");
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const statusBlock = document.getElementById("status");
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const localPeerBlock = document.getElementById("localPeerId");
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const remotePeerId = document.getElementById("remotePeerId");
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const remoteMultiAddr = document.getElementById("remoteMultiAddr");
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const contentTopicBlock = document.getElementById("contentTopic");
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const messagesBlock = document.getElementById("messages");
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const nickText = document.getElementById("nickText");
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const messageText = document.getElementById("messageText");
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return {
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// UI events
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onExit: (cb) => {
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exitButton.addEventListener("click", cb);
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},
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onSendMessage: (cb) => {
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sendButton.addEventListener("click", async () => {
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await cb({
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nick: nickText.value,
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text: messageText.value,
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});
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messageText.value = "";
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});
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},
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// UI renderers
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setStatus: (value, className) => {
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statusBlock.innerHTML = `<span class=${className || ""}>${value}</span>`;
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},
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setLocalPeer: (id) => {
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localPeerBlock.innerText = id.toString();
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},
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setRemotePeer: (ids) => {
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remotePeerId.innerText = ids.join("\n");
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},
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setRemoteMultiAddr: (multiAddr) => {
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remoteMultiAddr.innerText = multiAddr.toString();
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},
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setContentTopic: (topic) => {
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contentTopicBlock.innerText = topic.toString();
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},
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renderMessage: (messageObj) => {
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const { nick, text, timestamp } = messageObj;
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const date = new Date(timestamp);
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// WARNING: XSS vulnerable
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messagesBlock.innerHTML += `
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<div class="message">
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<p>${nick} <span>(${date.toDateString()})</span>:</p>
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<p>${text}</p>
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<div>
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`;
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},
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resetMessages: () => {
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messagesBlock.innerHTML = "";
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},
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};
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}
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@ -1,51 +0,0 @@
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html {
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scroll-behavior: smooth;
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}
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h1 {
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margin: 1rem 2.5rem 1rem 0;
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}
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.value {
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font-size: 1.3em;
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}
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body > footer {
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text-align: right;
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}
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.row {
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display: flex;
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flex-wrap: wrap;
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justify-content: space-between;
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}
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.rcenter {
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align-items: center;
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}
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.mu1 {
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margin-top: 4em;
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}
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.w50 {
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width: 46%;
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}
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.w30 {
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width: 35%;
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}
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.w70 {
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width: 60%;
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}
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.mf label {
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width: 100%;
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}
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.mf input {
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width: 80%;
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}
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.mf input.p100 {
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width: 100%;
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}
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