CSS text-combine-upright Property

The text-combine-upright property specifies the combination of characters into the space of a single character.

If the combined text is wider than 1em, the user agent must fit the contents within 1em.

The text-combine-upright property only has an effect in vertical writing modes.

Initial Value none
Applies to Non-replaced inline elements.
Inherited Yes.
Animatable No.
Version CSS1
DOM Syntax object.style.textCombineUpright = "all";


text-combine-upright: none | all | digits <integer>?;


<!DOCTYPE html>
    <title>Title of the document</title>
      .example {
      writing-mode: vertical-lr;
      text-combine-upright: digits 2;
      font: 32px "Roboro", Helvetica, Sans serif;
    <h2>Text-combine-upright property example</h2>
    <p lang="ja" class="example">平成18年6月22日に</p>


Value Description
none No special processing.
all Arranges horizontally all consecutive typographic character units within the box such that they take up the space of a single typographic character unit within the vertical line box.
digits <integer>? Displays a sequence of consecutive ASCII digits (U+0030–U+0039) that has as many or fewer characters than the specified integer, such that it takes up the space of a single character within the vertical line box.
initial Sets the property to its default value.
inherit Inherits the property from its parent element.

Related articles