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

    .leaflet-container {
      height: 600px;
      width: 1200px;
      max-width: 100%;
      max-height: 100%;
    }

    #map {
      height: 100%;
      width: 100vw;
    }