body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f6f7fb;
  color: #1f2933;
}

.container {
  max-width: 640px;
  margin: 12vh auto 0;
  padding: 24px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(31, 41, 51, 0.12);
}

h1 {
  margin-top: 0;
}