body {
  margin: 0;
  font-family: Arial, sans-serif;
}

h3 {
  text-align: center;
  margin: 8px;
}

#map {
  width: 100%;
  height: 90vh;
}
.legend {
  background: white;
  padding: 8px;
  font-size: 12px;
  box-shadow: 0 0 5px rgba(0,0,0,0.4);
}