.topup-page {
  max-width: 30rem;
  margin: 0 auto;
  padding: .5rem 0 3rem;
}
.topup-page input[type=text],
.topup-page input[type=email] {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: .6rem .75rem;
  margin-bottom: 1.1rem;
}
.topup-page .field-label .opt {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--faint-2);
}
.topup-page .btn { margin-top: .4rem; }
.topup-page .note { margin-top: 1.25rem; }