Dompdf\FrameDecorator\Text::get_margin_height
Vertical margins & padding do not apply to text frames
http://www.w3.org/TR/CSS21/visudet.html#inline-non-replaced: The vertical padding, border and margin of an inline, non-replaced box start at the top and bottom of the content area, not the 'line-height'. But only the 'line-height' is used to calculate the height of the line box.
Signature
public function get_margin_height()
Returns
- float|int