style.css

html,
body {
  padding: 0;
  margin: 0 auto;
  height: 100%;
  width: 100%;
}

#map {
  width: 100vw;
  height: 100vh;
  visibility: hidden;
}

h3 {
  margin: 0;
  font-size: 1.5em;
}

h5 {
  margin: 0;
  font-size: 1.25em;
  font-weight: normal;
}

h6 {
  margin: 0;
  font-size: 1.2em;
}

.leaflet-top .map-title {
  max-width: 450px;
}

.intro-popup .leaflet-popup-tip-container {
  width: 0;
  height: 0;
}

.pointer {
  cursor: pointer;
}

.leaflet-control-custom {
  padding: 6px 8px;
  background: white;
  box-shadow: 0 1px 5px rgba(0,0,0,0.4);
  color: #333;
  border-radius: 5px;
}

form {
  margin-top: 2px;
}

.polygons-legend-scale {
  margin-top: 4px;
  padding-top: 7px;
  border-top: dotted 3px #eee;
}

.polygons-legend-scale i {
  width: 18px;
  height: 18px;
  float: left;
  margin-right: 8px;
}

.leaflet-popup-content {
  min-width: 150px;
}

.leaflet-popup-content img {
  width: 100%;
  margin: 5px 0 5px 0;
}


.loader,
.loader:before,
.loader:after {
  background: #000;
  -webkit-animation: load1 1s infinite ease-in-out;
  animation: load1 1s infinite ease-in-out;
  width: 1em;
  height: 4em;
}
.loader:before,
.loader:after {
  position: absolute;
  top: 0;
  content: '';
}
.loader:before {
  left: -1.5em;
  -webkit-animation-delay: -0.32s;
  animation-delay: -0.32s;
}
.loader {
  color: #000;
  text-indent: -9999em;
  position: absolute;
  left: 50vw;
  top: 45vh;
  font-size: 11px;
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-animation-delay: -0.16s;
  animation-delay: -0.16s;
}
.loader:after {
  left: 1.5em;
}
@-webkit-keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}
@keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow: 0 0;
    height: 4em;
  }
  40% {
    box-shadow: 0 -2em;
    height: 5em;
  }
}

/* Technically there are two map titles, on the left and on the right,
 * at all times. On a big screen, map title in the right column is not
 * displayed. On a mobile device, title in the right column is shown with 0
 * opacity, so that search, locate, and zoom buttons do not overlay the title,
 * creating an effect as if the title is located on top, and not the left column.
 */
.leaflet-right .map-title { display: none; }

@media only screen and (max-width: 760px) {
  .leaflet-right .map-title {
    display: block;
    opacity: 0;
  }

  .leaflet-left .map-title {
    width: 98%;
  }
}

#mobile-intro-popup {
  position: absolute;
  bottom: 5vh;
  left: 10vw;
  width: 70vw;
  z-index: 1000;
  background: white;
  padding: 1vh 5vw;
  opacity: 0.9;
  border: 5px #ddd solid;
  border-radius: 5px;
  font-family: "Helvetica Neue", Arial;
}

#mobile-intro-popup p {
  margin: 10px 0 10px 0;
  max-height: 80vh;
  overflow-y: scroll;
  overflow-x: hidden;
}

#mobile-intro-popup-close {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 30px;
  background: #bbb;
  color: white;
  font-size: 1.4em;
  text-align: center;
  border-radius: 5px;
  opacity: 0.8;
}

.polygon-label {
  position: absolute;
  left: -15px;
  color: #444;
  font-weight: bold;
  opacity: 0.9;
  pointer-events: none !important;
}

.color-line {
  display: inline-block;
  vertical-align: middle;
  height: 3px;
  width: 20px;
}

.markers-legend-icon {
  height: 12px;
  vertical-align: middle;
}