code: function isFixedSize(element, prop) {
  	var originalStyle = getOriginalStyle(element, prop);
  	if (originalStyle && (
  		originalStyle.match(LENGTH_REGEXP)
  		|| originalStyle.match(/^calc\([^%]*\)$/i)
  	)) {
  		return true;
  	}
  	return false;
  }
docs: Is the size of the element a fixed length e.g. `1px`?
  
  @param  {Element} element
  @param  {string}  prop    `width` or `height`
  @return {boolean}