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<head>
<meta charset="utf-8">
<!-- load d3 -->
<script src="https://d3js.org/d3.v4.min.js"></script>
<!-- load mapbox -->
<script src='https://api.mapbox.com/mapbox.js/v2.2.3/mapbox.js'></script>
<link href='https://api.mapbox.com/mapbox.js/v2.2.3/mapbox.css' rel='stylesheet' />
<!-- edit the style -->
<style>
body {
margin:0;
position:fixed;
top:0;
right:0;
bottom:0;
left:0;
}
#map {
position: absolute;
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<div id='map'></div>
<script>
L.mapbox.accessToken = 'pk.eyJ1IjoibmtlcmFtYXJpcyIsImEiOiJjajA1bXp3cm8waTNpMzNteTI0dGJwY3ptIn0.7tKTALy0L0mmlbHk2eWRMw';
var map = L.mapbox.map('map', 'zetter.i73ka9hn').setView([42.31726,-71.31743], 16);
// Setup our svg layer that we can manipulate with d3
var svg = d3.select(map.getPanes().overlayPane)
.append("svg");
var g = svg.append("g").attr("class", "leaflet-zoom-hide");
</script>
</body>
https://d3js.org/d3.v4.min.js
https://api.mapbox.com/mapbox.js/v2.2.3/mapbox.js