createElement() {
    this.element = window.document.createElement('div');

    this.element.className = 'whs-app';
    this.element.style.width = 'inherit';
    this.element.style.height = 'inherit';
    this.element.style.position = 'relative';
  }
@method createElement
@instance
@description Creates a canvas element.
@memberof module:modules/app.ElementModule