CSS text-combine-upright Property

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div {
  writing-mode: vertical-rl;
  font: 24px serif;
.num {
  text-combine-upright: all;



The text-combine-upright CSS property sets 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 resulting composition is treated as a single upright glyph for layout and decoration. This property only has an effect in vertical writing modes.

Default value:none
JavaScript syntax:
object.style.textCombineUpright="none|all|digits integer?|initial|inherit|revert|revert-layer|unset";

Standard Syntax

text-combine-upright: none|all|digits integer?|initial|inherit|revert|revert-layer|unset;

Browser Support


Property Values

The following table describes the values of this property:

Value Description
none There is no special processing.
all Attempts to typeset all consecutive characters within the box horizontally, such that they take up the space of a single character within the vertical line of the box.
digits integer? Attempts to display 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. If the integer is omitted, it computes to 2. Integers outside the range of 2-4 are invalid.
initial Sets this property to its default value.
inherit If specified, the associated element takes the computed value of its parent element animation-delay property.
revert Reverts the cascaded value of the property from its current value to the value the property
revert-layer Rollback styles to the ones specified in previous cascade layers.
unset Resets a property to its inherited value if the property naturally inherits from its parent, and to its initial value if not.

Default CSS Property Values

selectors {
  text-combine-upright: none;
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