#zoom-bar {
  position: absolute;
  bottom: 50px;
  right: 10px;
  background: white;
  border-width: 1px;
  border-style: solid;
  border-color: grey;
  padding: 5px 4px 0px 4px;
  height: 40px;
}

#btn_zoom_in {
  background: url(../img/plus.svg);
  background-position: center;
  background-repeat: no-repeat;
  width: 16px;
  height: 16px;
}

#btn_zoom_out {
  background: url(../img/minus.svg);
  background-position: center;
  background-repeat: no-repeat;
  width: 16px;
  height: 25px;
}