index.md

---

title: prefix
slug: Web/CSS/@counter-style/prefix
page-type: css-at-rule-descriptor
browser-compat: css.at-rules.counter-style.prefix

---

{{CSSRef}}

The prefix descriptor of the {{cssxref('@counter-style')}} rule specifies content that will be prepended to the marker representation. If not specified, the default value will be "" (an empty string).

Syntax

/* <symbol> values */
prefix: "»";
prefix: "Page ";
prefix: url(bullet.png);

Values

• <symbol>

  • : Specifies a <symbol> that is prepended to the marker representation. It may be a {{cssxref("<string>")}}, {{cssxref("<image>")}}, or {{cssxref("<custom-ident>")}}.

Formal definition

{{cssinfo}}

Formal syntax

{{csssyntax}}

Examples

Adding a prefix to a counter

HTML

<ul class="index">
  <li>The Boy Who Lived</li>
  <li>The Vanishing Glass</li>
  <li>The Letters from No One</li>
  <li>The Keeper of the Keys</li>
  <li>Diagon Alley</li>
</ul>

CSS

@counter-style chapters {
  system: numeric;
  symbols: "0" "1" "2" "3" "4" "5" "6" "7" "8" "9";
  prefix: "Chapter ";
}

.index {
  list-style: chapters;
  padding-left: 15ch;
}

Result

{{ EmbedLiveSample('Adding_a_prefix_to_a_counter') }}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{Cssxref("list-style")}}, {{Cssxref("list-style-image")}}, {{Cssxref("list-style-position")}}

• {{cssxref("symbols", "symbols()")}}, the functional notation creating anonymous counter styles