html, body {
  height: 100%;
}

body {
  font-family: 'Courier New', Courier, monospace;
  padding: 0;
  margin: 0;
}

a, a:link, a:visited {
  color: #00f;
}

nav {
  border-bottom: 1px solid #999;
  background-color: #eee;
  padding: 5px;
}

nav a {
  color: #666!important;
  border: 1px solid #999;
  text-decoration: none;
  padding: 5px 10px;
  display: inline-block;
}

h3 {
  text-align: center;
}

.xin-view {
  padding: 10px;
}

.foo-view {
  background-color: #faa;
}

.bar-view {
  background-color: #afa;
}