html, body {
  height: 100%;
}

body {
  text-align: center;
  padding: 0;
  margin: 0;
}

div#distance {
  margin-bottom: -10em;
  width: 1px;
  height: 50%;
  float: left;
}

div#content {
  position: relative;
  height: 18em;
  width: 40em;
  margin: 0 auto;
  clear: left;
  text-align: center;
  font: 14px Verdana;
}