text-align - CSS: Cascading Style Sheets 编辑

The text-align CSS property sets the horizontal alignment of a block element or table-cell box. This means it works like vertical-align but in the horizontal direction.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

/* Keyword values */
text-align: left;
text-align: right;
text-align: center;
text-align: justify;
text-align: justify-all;
text-align: start;
text-align: end;
text-align: match-parent;

/* Character-based alignment in a table column */
text-align: ".";
text-align: "." center;

/* Block alignment values (Non-standard syntax) */
text-align: -moz-center;
text-align: -webkit-center;

/* Global values */
text-align: inherit;
text-align: initial;
text-align: unset;

The text-align property is specified in one of the following ways:

• Using the keyword values start, end, left, right, center, justify, justify-all, or match-parent.
• Using a <string> value only, in which case the other value defaults to right.
• Using both a keyword value and a <string> value.

Values

start

The same as left if direction is left-to-right and right if direction is right-to-left.

end

The same as right if direction is left-to-right and left if direction is right-to-left.

left

The inline contents are aligned to the left edge of the line box.

right

The inline contents are aligned to the right edge of the line box.

center

The inline contents are centered within the line box.

justify

The inline contents are justified. Text should be spaced to line up its left and right edges to the left and right edges of the line box, except for the last line.

justify-all

Same as justify, but also forces the last line to be justified.

match-parent

Similar to inherit, but the values start and end are calculated according to the parent's direction and are replaced by the appropriate left or right value.

<string>

When applied to a table cell, specifies the alignment character around which the cell's contents will align.

Accessibility concerns

The inconsistent spacing between words created by justified text can be problematic for people with cognitive concerns such as Dyslexia.

• MDN Understanding WCAG, Guideline 1.4 explanations
• Understanding Success Criterion 1.4.8 | Understanding WCAG 2.0

Formal definition

Formal syntax

start | end | left | right | center | justify | match-parent

Examples

Left alignment

HTML

<p class="example">
  Integer elementum massa at nulla placerat varius.
  Suspendisse in libero risus, in interdum massa.
  Vestibulum ac leo vitae metus faucibus gravida ac in neque.
  Nullam est eros, suscipit sed dictum quis, accumsan a ligula.
</p>

CSS

.example {
  text-align: left;
  border: solid;
}

Result

Centered text

HTML

<p class="example">
  Integer elementum massa at nulla placerat varius.
  Suspendisse in libero risus, in interdum massa.
  Vestibulum ac leo vitae metus faucibus gravida ac in neque.
  Nullam est eros, suscipit sed dictum quis, accumsan a ligula.
</p>

CSS

.example {
  text-align: center;
  border: solid;
}

Result

Justify

HTML

<p class="example">
  Integer elementum massa at nulla placerat varius.
  Suspendisse in libero risus, in interdum massa.
  Vestibulum ac leo vitae metus faucibus gravida ac in neque.
  Nullam est eros, suscipit sed dictum quis, accumsan a ligula.
</p>

CSS

.example {
  text-align: justify;
  border: solid;
}

Result

Notes

The standard-compatible way to center a block itself without centering its inline content is setting the left and right margin to auto, e.g.:

.something {
  margin: auto;
}

.something {
  margin: 0 auto;
}

.something {
  margin-left: auto;
  margin-right: auto;
}

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• margin: auto, margin-left: auto, vertical-align