.map {
  height: 500px;
}

.centering-div {
  display: flex;
  justify-content: center;
}

.chart-div {
  margin: 0 50px 20px 50px;
}

#walkers_location_canvas_id {
  max-width: 800px;
  height: 500px;
  width: 100%;
  margin: 0 50px 20px 50px;
}