style.css

body {
  margin: 0;
  padding: 0;
}

#title {
  font-family: Arial, sans-serif;

  padding: 0px 5px 5px;
}

#map {
  position: absolute;
  top: 45px;
  bottom: 0;
  right: 0;
  left: 0;
}

.leaflet-marker-icon i.fa-number {
  font-size: 0.8rem !important;
}

.control-custom {
  background-color: rgba(255,255,255,1);
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
  border-radius: 5px;
  padding: 8px 10px;
}

#rangeSlider {
  width: 100px;
}

.range h4 {
  margin: 0;
}