<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="Content-Type" content="text/html">
  <title>Topic cloud</title>
  <link rel="stylesheet" type="text/css" href="{{ url_for('static', filename = 'css/style.css') }}"/>
</head>
<style>
.node {
  stroke: #666;
  stroke-width: 1.5px;
}

.node:hover {
  stroke: #222;
  stroke-width: 3px;
}

text {
  font: 14px;
  color: #bbb;
  pointer-events: none;
}
</style>
<body>
    <div id="navigation">
        <select onChange="window.location.href=((this.