a {
  text-decoration: none;
}

a:link {
  color: #24c;
}

a:visited {
  color: #a2a;
}

body {
  background: #f7f7f7;
  font-family: sans-serif;
  margin: 1em;
  text-align: center;
}

h1 {
  color: #ff7f00;
  font-size: 150%;
}

h2 {
  border-bottom: solid 1px #bbb;
  color: #4a0;
  font-weight: normal;
  font-size: 140%;
}

img {
  border: 0;
}

#z0 {
  margin: auto;
  text-align: left;
  width: 960;
}

#z1 {
  float: right;
  width: 220;
}

#z2 {
  background: #fff;
  border: solid 1px #ddd;
  border-radius: 4;
  -moz-border-radius: 4;
  color: #444;
  line-height: 1.5;
  padding: 8;
  position: relative;
}

#z2 ul {
  margin: 0;
  padding: 0;
}

#z2 li {
  display: block;
  padding-left: .5em;
  font-size: 80%;
}

#z2 a {
  font-size: 125%;
}

#z2 p {
  color: #444;
  margin: .5em 0 .25em;
}

#z3 {
  color: #444;
  font-size: 90%;
  text-align: center;
}

#z4 {
  margin-right: 228;
}

#z5 {
  background: #fff;
  border: solid 1px #ddd;
  border-radius: 4;
  -moz-border-radius: 4;
  padding: 1em 2em;
}

.ext {
  background: url(external.png) center right no-repeat;
  padding-right: 13;
}

.w {
  background: url(wikipedia.png) center right no-repeat;
  padding-right: 18;
}

.popup_label {
  background: rgba(31, 31, 31, .9);
  box-shadow: 0 0 16px rgba(0, 0, 0, .35);
  -moz-box-shadow: 0 0 16px rgba(0, 0, 0, .35);
  -webkit-box-shadow: 0 0 16px rgba(0, 0, 0, .35);
  color: #fff;
  font-size: 90%;
  left: -16.25em;
  line-height: normal;
  padding: .5em;
  position: absolute;
  width: 15em;
}

.popup_label:after {
  border: solid 8px transparent;
  border-left-color: rgba(31, 31, 31, .9);
  right: -16;
  content: '';
  top: 8;
  position: absolute;
}