<!DOCTYPE html>
<html>
  <head>

    <meta charset="UTF-8">

    <!-- latest compiled and minified css -->
    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

    <style>
      .message {
        font-family: monospace;
      }
      .messages {
        overflow-x: auto;
        overflow-y: scroll;
      }
      .alert {
        width: 25em;
        float: left;
        margin-right: 2em;
      }
      body {
        padding: 1em;
        font-size: large;
   