google-maps-api-3 - Google マップの周りに枠線を引く方法

Question

Googleマップの周りに境界線を引く方法は? 利用した：

mapcanvas.style.style='border:10px solid #0b0';

これは正しいです？Google マップ初心者です。

表示されない理由はわかったと思いますが、誰か見て正しい形式を教えてください。

<section id="wrapper">
Click the allow button on the top of the page to let the browser find your location.
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
<article>
</article>
<script>
function initialize() {
  var mapOptions = {
    zoom: 12,
    center: new google.maps.LatLng(-28.643387, 153.612224),
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    mapTypeControl: true,
    mapTypeControlOptions: {
        style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
        position: google.maps.ControlPosition.BOTTOM_CENTER
    },
    panControl: true,
    panControlOptions: {
        position: google.maps.ControlPosition.TOP_RIGHT
    },
    zoomControl: true,
    zoomControlOptions: {
        style: google.maps.ZoomControlStyle.LARGE,
        position: google.maps.ControlPosition.LEFT_CENTER
    },
    scaleControl: true,
    scaleControlOptions: {
        position: google.maps.ControlPosition.TOP_LEFT
    },
    streetViewControl: true,
    streetViewControlOptions: {
        position: google.maps.ControlPosition.LEFT_TOP
    }
  }
  var map = new google.maps.Map(document.getElementById("map-canvas"),
      mapOptions);
}
function success(position) {
  var mapcanvas = document.createElement('div');
  mapcanvas.id = 'mapcontainer';
  mapcanvas.style.height = '250px';
  mapcanvas.style.width = 'auto';
  mapcanvas.style.style='border:10px solid #0b0';
  document.querySelector('article').appendChild(mapcanvas);
  var coords = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
  var options = {
    zoom: 15,
    center: coords,
    mapTypeControl: true,
    navigationControlOptions: {
        style: google.maps.NavigationControlStyle.SMALL
    },
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  var map = new google.maps.Map(document.getElementById("mapcontainer"), options);
  var marker = new google.maps.Marker({
      position: coords,
      map: map,
      title:"You are here!"
  });
}
if (navigator.geolocation) {
  navigator.geolocation.getCurrentPosition(success);
} else {
  error('Geo Location is not supported');
}
</script>
</section>