.google-map {

}

.google-map iframe {
  height: 450px;
  width: 100%;
}
.google-map h2 {
  text-align: center;
  margin-bottom: 10px;
}

@media screen and (min-width: 800px) {
  .google-map {
    width: 50%;
    margin: 0 auto 25px auto;
  }
  .google-map iframe {
    height: 450px;
    width: 100%;
  }
}