#map {
  position: absolute;
  top: 0px;
  bottom: 0px;
  left: 0px;
  right: 0px;
  z-index: -1;
}

#search {
  position: absolute;
  overflow: auto;
  top: 20px;
  left: 20px;
  bottom: 20px;
  width: 25%;
  background: lightgray;
}

#load-btn {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translate(-50%, 0);
}

#sidebar {
  position: absolute;
  top: 20px;
  left: 20px;
  bottom: 20px;
  overflow: auto;
}