* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  background: #ffffff;
  color: #111;
}

.container {
  max-width: 520px;
  margin: 0 auto;
  padding: 48px 20px;
  text-align: center;
}

h1 {
  font-size: 28px;
  margin-bottom: 16px;
}

.promise {
  font-size: 18px;
  margin-bottom: 12px;
}

.sub {
  font-size: 15px;
  color: #555;
  margin-bottom: 28px;
}

.form-wrapper {
  margin: 20px 0 12px;
}

/* Rassurance */
.reassurance {
  font-size: 13px;
  color: #777;
  margin-top: 8px;
}

/* Mobile optimisation */
@media (max-width: 480px) {
  h1 {
    font-size: 24px;
  }

  .promise {
    font-size: 16px;
  }
}