function outerHeight(element) {
  let height = element.offsetHeight;
  const style = getComputedStyle(element);
  height += parseInt(style.marginTop, 10) + parseInt(style.marginBottom, 10);

  return height;
}
Get the current computed height for the given element including margin,
padding and border.
Equivalent to jQuery's `$(el).outerHeight(true)`.
@param {!HTMLElement} element Element.
@return {number} The height.