When working with View and Data API, you probably want to contain viewer into a <div> tag, the position and size of <div> can be defined with CSS. The HTML can be simple as below, a <div> tag as a container, the position and style is defined in a CSS class named as “viewer”:

    <h2>Autodesk View and Data API</h2>
    <div id="viewer"
 
 class="viewer">

    </div>

For example, here is my css class, make the viewer container with 800px * 500px, and to make it easy to see, I also add a background color:

.viewer {

    background-color: darksalmon;
    height: 500px;
    width: 800px;
  }

Here is how it looks like, seems good:

Now let’s add viewer, the code snippet is simple, you can go to github for complete code:

        var viewerContainer = document.getElementById(containerId);
        var viewer = new Autodesk.Viewing.Private.GuiViewer3D(
            viewerContainer);

But just with this style, the viewer is “overflow” out of the <div> container,:

Here is a tip to contains the viewer into the <div> container, just edit the CSS as below, add “position : relative” :

.viewer {

    background-color: darksalmon;
    height: 500px;
    width: 800px;
    position: relative;
}

Here is how it looks after the change, the viewer is constrained within the div tag:

Not a big deal, just a small tip in case you do not know.