body {
  background-image: url(https://images.pexels.com/photos/110854/pexels-photo-110854.jpeg?auto=compress&cs=tinysrgb&dpr=3&h=750&w=1260);
  background-size: cover;
  color: white;
}
#map_canvas {
  width: 100%;
  height: 120%;
}

.heading {
  width: 100%;
  text-align: center;
}