eft:0;
  height:100px;
  }
.brush .extent {
  stroke:#fff;
  fill-opacity:0.125;
  shape-rendering:crispEdges;
  }
</style>

<div id='map' class='dark'></div>
<div id='brush' class='ui-brush'></div>

<script>
var map = L.mapbox.map('map')
    .setView([0, 0], 1)
    .addLayer(L.mapbox.styleLayer('mapbox://styles/mapbox/satellite-v9'));

var credits = L.control.attribution({
  prefix: '<a href="http://earthquake.usgs.gov/earthquakes/feed/v1.0/geojson.php">Data from USGS</a>'
}).addTo(map);

// Create a new l