code: function CssStage(opts) {
    this.constructor.super_.call(this, opts);
  
    this._loader = new HtmlImageLoader(this);
  
    this._domElement = document.createElement('div');
  
    setAbsolute(this._domElement);
    setFullSize(this._domElement);
  
    // N.B. the CSS stage requires device adaptation to be configured through
    // the <meta name="viewport"> tag on the containing document.
    // Failure to do so will cause clipping and padding bugs to occur,
    // at least on iOS <= 7.
  }
docs: @class CssStage
  @extends Stage
  @classdesc
  
  A {@link Stage} implementation using CSS 3D Transforms.
  
  @param {Object} opts
  
  Also see the available {@link Stage} options.