mapbox FullscreenControl 全屏展示出现底部留黑

这个是我用天地图公司写的但是出现了全屏展示的时候出现了底部流黑，查看流黑是因为他默认给了900多的高度，我们加上这两句就可以了

 document.getElementsByClassName("mapboxgl-canvas")[0].style.height = "100%";
    document.getElementsByClassName("mapboxgl-canvas")[0].style.width = "100%"; 

methods: {
    initmap(mapId, zoom) {
      if (!window.havevec) {
        window.STYLE.layers.unshift(window.layerVec);
        window.STYLE.layers.unshift(window.layerTer); //地形
        window.STYLE.layers.unshift(window.layerImg); //影像
        window.havevec = true;
      }
      let initMap = new mapboxgl.Map({
        container: mapId,
        style: window.STYLE,
        zoom: zoom,
        center: [116.28076521512813, 39.85685373066069],
        preserveDrawingBuffer: true,
        trackResize: false
      });
      return initMap;
    }
  },
  mounted() {
    window.map = this.initmap(map, 6);
    window.map.on("load", function() {
      map.addLayer({
        id: "annotation",
        type: "raster",
        source: {
          type: "raster",
          tiles: [
            "http://t0.tianditu.gov.cn" +
              "/cva_w/wmts?SERVICE=WMTS&REQUEST=GetTile&VERSION=1.0.0&LAYER=cva&STYLE=default&TILEMATRIXSET=w&FORMAT=tiles&TILECOL={x}&TILEROW={y}&TILEMATRIX={z}&tk=" +
              window.gpmToken
          ]
          // tileSize: 256
        },
        paint: {}
      });
    });
    document.getElementsByClassName("mapboxgl-canvas")[0].style.height = "100%";
    document.getElementsByClassName("mapboxgl-canvas")[0].style.width = "100%";
    map.addControl(new mapboxgl.FullscreenControl(), "top-right");
    map.addControl(new mapboxgl.NavigationControl(), "top-right");
  }