html {
  background: #669900;
  padding: 1em;
}
body {
  -moz-border-radius: 4em;
  -webkit-border-radius: 4em;
  border-radius: 4em;
  background: white url(earth4.jpg) bottom right no-repeat;
  padding: 0 2em 1em;
  font-family: Tahoma, Geneva, sans-serif;
}
body#main {
  background-image: url(earth3.jpg);
}

h1 {
  text-align: center;
  font-size: 2.5em;
  font-weight: bold;
  border-bottom: solid;
  color: #669900;
  margin: 0;
  padding: .5em;
}

h2 {
  color: #507700;
}

strong {
  color: #c40;
  font-size: bigger;
}

ul {
  margin: 1em;
  padding-left: 1em;
}
li {
  margin: 0;
  padding: 0;
}

.subtitle {
  font-style: italic;
  text-align: center;
}

.facts {
  min-width: 20em;
  margin-right: 360px;
  border: solid #669900;
  border-style: solid none;
  padding: 0.2em 0.5em;
}

.nav {
  text-align: center;
  margin: 1em;
}

.nav a {
  text-decoration: none;
  background: #669900;
  color: white;
  padding: 0.1em 1em 0.2em;
  margin: 0 3%;
  -moz-border-radius: 1em;
  -webkit-border-radius: 0.7em;
  border-radius: 1em;
  text-shadow: 0 0 0.5em black;
}

.nav li {
  display: inline;
}

.tag {
  text-align: center;
  font-style: italic;
}