<!DOCTYPE HTML>
<html>

<head>
  <meta charset="utf-8">
  <style>
    body {
      height: 2000px;
      /* the tooltip should work after page scroll too */
    }

    .tooltip {
      position: fixed;
      z-index: 100;

      padding: 10px 20px;

      border: 1px solid #b3c9ce;
      border-radius: 4px;
      text-align: center;
      font: italic 14px/1.3 sans-serif;
      color: #333;
      background: #fff;
      box-shadow: 3px 3px 3px rgba(0, 0, 0, .3);
    }

    #house {
      margin-top: 50px;
 