<!doctype html>
<html>
  <head>
    <meta charset='UTF-8' />
    <title>streetscape.gl quick start</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
body { margin: 0; }
#container { position: fixed; display: flex; width: 100vw; height: 100vh; overflow: hidden; }
#control-panel { box-sizing: border-box; width: 320px; padding: 12px; position: relative; z-index: 1; box-shadow: 0 0 8px rgba(0,0,0,0.3); height: 100%; overflow-x: hidden; overflow-y: auto; }
#control-pa