body {
  background-color: #1e1e1e;
  color: #f0f0f0;
  margin: 0;
  padding: 20px;
}
.content-container {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}
h1 {
  color: #f0f0f0;
  font-size: 1.4em;
  margin-bottom: 20px;
}
p {
  color: #ccc;
  margin-bottom: 15px;
}
.signature {
  margin-top: 30px;
  color: #ffe680;
}

/* Android app: bigger type. */
html.app .content-container {
  font-size: 1.2em;
}