body, html, h1, h2 {
  margin: 0;
  padding: 0;
  font-family: 'Roboto Slab', serif;
  background-color:#fafafa;
}

#header {
  background-color: #2d2d2d;
  color: white;
  text-align: center;
}

#description {
  margin: 20px;
  text-align: center;
  font-size: 20px;
}

#footer {
  margin-top: 40px;
  padding-top: 40px;
  padding-bottom: 40px;
  font-size: 12px;
  line-height: 1.5;
  color: #777;
  border-top: 1px solid #eee;
  text-align: center;
}

#code-block {
  margin: 10px auto;
  width: 80%;
}

#code-block h3 {
  text-align: center;
}

#settings {
  width: 80%;
  margin: 0 auto;
  text-align: center;
}

#buttons {
  text-align: center;
  margin: 10px auto;
  width: 80%;
}

button {
  text-align: center;
  padding: 5px 10px;
  font-size: 16px;
}

select, input[type="text"] {
  padding: 5px 10px;
  font-size: 16px;
}