The ruby-position CSS property defines the position of a ruby element relatives to its base element. It can be positioned over the element (over), under it (under), or between the characters on their right side (inter-character).

/* Keyword values */ ruby-position: over; ruby-position: under; ruby-position: inter-character; ruby-position: alternate;  /* Global values */ ruby-position: inherit; ruby-position: initial; ruby-position: revert; ruby-position: unset; 

ruby-position

The ruby-position CSS property defines the position of a ruby element relatives to its base element. It can be positioned over the element (over), under it (under), or between the characters on their right side (inter-character).

Syntax

/* Keyword values */ ruby-position: over; ruby-position: under; ruby-position: inter-character; ruby-position: alternate;  /* Global values */ ruby-position: inherit; ruby-position: initial; ruby-position: revert; ruby-position: unset; 

Values

over

Is a keyword indicating that the ruby has to be placed over the main text for horizontal scripts and right to it for vertical scripts.

under

Is a keyword indicating that the ruby has to be placed under the main text for horizontal scripts and left to it for vertical scripts.

inter-character

Is a keyword indicating that the ruby has to be placed between the different characters.

alternate

Is a keyword indicating that the ruby alternates between over and under, when there are multiple levels of annotation.

Formal definition

Initial value	alternate
Applies to	ruby annotations containers
Inherited	yes
Computed value	as specified
Animation type	discrete

Formal syntax

[ alternate || [ over | under ] ] | inter-character

Examples

Ruby positioned over the text

HTML

<ruby>   <rb>超電磁砲</rb>   <rp>（</rp><rt>レールガン</rt><rp>）</rp> </ruby> 

CSS

ruby {     ruby-position:over; } 

Result

Ruby positioned under the text

HTML

<ruby>   <rb>超電磁砲</rb>   <rp>（</rp><rt>レールガン</rt><rp>）</rp> </ruby> 

CSS

ruby {     ruby-position:under; } 

Result

Ruby alternate

HTML

<ruby>   <rb>A<rb>B<rb>C</rb>   <rtc>Above</rtc>   <rtc>Below</rtc> </ruby> 

CSS

ruby {     ruby-position: alternate; /* this is also the initial value */ } 

Result

Specifications

Specification
CSS Ruby Annotation Layout Module Level 1 # rubypos

See also

HTML Ruby elements: <ruby>, <rt>, <rp>, and <rtc>. CSS Ruby properties: ruby-align, ruby-merge. Select your preferred language English (US)Français日本語正體中文 (繁體) Change language