<!DOCTYPE html>
<html>
<head>
    <title>Map Client III: Web Map Interaction</title>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.2.0/dist/leaflet.css"/>
    <style>
        /*full screen the map*/
        html { height:100%;}
        body {
            height:100%;
            padding: 0;
            margin: 0;
        }
        #map {
            width: 100%;
            height: 100%;
   