.form-container {
  display: flex;
  justify-content: center;      /* horizontal centering */
  align-items: center;          /* vertical centering */
  width: 100%;
  min-height: 100vh;            /* full viewport height */
  padding: 1rem;                /* spacing around iframe */
  box-sizing: border-box;
  background-color: #fefefe;    /* optional light background */
}

/* ---------- Form Iframe ---------- */
.form-container iframe {
  width: 100%;
  max-width: 800px;             /* optional max width for large screens */
  height: 100vh;                /* full viewport height */
  border: none;
  background: white;            /* ensures form background is visible */