.access-g-map {
  position: relative;
  width: 100%;
  padding-top: 56.75%;
  margin: 0;
}
.access-g-map iframe {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 100%;
  margin: auto;
}