.giving-checkout-page .membership-checkout-section {
  padding-top: 2rem;
}
.giving-checkout-back {
  max-width: 980px;
  margin: 0 auto 1.5rem;
}
.giving-checkout-page .section-head {
  margin-bottom: 1.75rem;
}
.giving-checkout-page h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  margin: 0 0 .75rem;
}
.giving-checkout-page .section-head .muted {
  font-size: .9rem;
}
.giving-checkout-help {
  text-align: center;
  font-size: .9rem;
  margin: 1.25rem auto 0;
}
/* Keep the form visible while Humanitix waits for its first resize message.
   Its inline min-height can still grow the frame for each checkout step. */
.giving-checkout-page .membership-embed-shell iframe {
  height: 720px;
  max-height: none !important;
}
@media (max-width: 640px) {
  .giving-checkout-page .membership-embed-shell iframe {
    height: 640px;
  }
}