<!DOCTYPE HTML>
<html>
<head>
    <base href="localhost://localhost:8081/">
    <title>在线聊天</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.css" rel="stylesheet">
    <script src="http://apps.bdimg.com/libs/jquery/1.6.4/jquery.min.js"></script>
</head>
<style>
    .fix-bottom {
        position: fixed;
        bottom: 0;
    }

    .text-size {
        width: 500px;
        height: 100px;
        resize: none;
    }

    .text-background {
        border: 2px solid anti