var L2 = new L.geoJson(L2, {
  style: function(feature) {
    return {
      color: 'black',
      weight: 7
    };
  },
  onEachFeature: function(feature, layer) {
    layer.on({
      'mousemove': function(e) {
        e.target.setStyle({
          weight: 7,
          color: 'red'
        });

      },
      'mouseout': function(e) {
        L2.resetStyle(e.target);
      },
      'click': function(e) {
        mymap.fitBounds(e.target.getBounds());
        L2.bindPopup("<b>" + feature.properties.Nom);
      }
    });
  }
}).addTo(mymap);