html, body {
  height: 100%;
  width: 100%;
}
#map {
  width: 100%;
  height: calc(100vh - 140px);
  z-index : 1;
}

.multi-icon {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    font-size: 16px;
    font-weight: bold;
    color:white;
}