.contact-map {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.1);
  margin-top: 1rem;
}

.contact-map iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}