over

Draws marks over the text in horizontal writing mode.

under

Draws marks under the text in horizontal writing mode.

right

Draws marks to the right of the text in vertical writing mode.

left

Draws marks to the left of the text in vertical writing mode.

The preferred position of emphasis marks depends on the language. In Japanese for example, the preferred position is over right. In Chinese, on the other hand, the preferred position is under right. The informative table below summarizes the preferred emphasis mark positions for Chinese, Mongolian and Japanese:

Preferred emphasis mark and ruby position

Language	Preferred position		Illustration
	Horizontal	Vertical
Japanese	over	right
Korean
Mongolian
Chinese	under	right

text-emphasis-position = 
  [ over | under ]   &&
  [ right | left ]?  

Some editors prefer to hide emphasis marks when they conflict with ruby. In HTML, this can be done with the following style rule:

ruby {
  text-emphasis: none;
}

Some other editors prefer to hide ruby when they conflict with emphasis marks. In HTML, this can be done with the following pattern:

em {
  text-emphasis: dot; /* Set text-emphasis for <em> elements */
}

em rt {
  display: none; /* Hide ruby inside <em> elements */
}

• The longhand properties text-emphasis-style, text-emphasis-color, and the corresponding shorthand property text-emphasis.