<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>等高线</title>
    <script include="jquery" src="./static/libs/include-lib-local.js"></script>
    <script
      include="language,deckgl"
      src="./static/libs/include-mapboxgl-local.js"
    ></script>
    <style>
      body {
        margin: 0;
        padding: 0;
      }

      #map {
        position: absolute;
        top: 0;
        bottom: 0;
