Incorrect conversion for vertical-align

[Azmisov]

For vertical-align, the two numeric values it can take are percentage and length.

• Length in this case is offset from text's baseline
• Percentage is offset from baseline as a percentage of line height
  So to correctly convert them you need to calculate line height. Unfortunately, getComputedStyle for line-height can return "normal" (appears to be "px" for all other cases). Perhaps a way to convert "normal" could be to measure something like:

getCreatedElementHeight(document.body, {
    lineHeight: el_styles.lineHeight, 
    fontFamily: el_styles.fontFamily, 
    fontSize: el_styles.fontSize
});

Though that may not be entirely reliable