html, body {
  height: 100%;
  margin: 0 auto;
}

#container {
  text-align: center;
  height: 100%;
}

.button {
  color: #333;
  background-color: #fff;
  border-color: #ccc;
  font-size: 14px;
  font-weight: 400;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  line-height: 1.42857143;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  padding: 6px 12px;
}
.info {
  padding: 20px;
}
.error {
  font-weight: bold;
  font-size: 20px;
  padding: 20px;
}