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suffix

The suffix descriptor of the @counter-style rule specifies content that will be appended to the marker representation.

/* <symbol> values */
suffix: "";
suffix: ") ";
suffix: url(bullet.png);

<symbol>: Specifies a <symbol> that is appended to the marker representation. It may be a <string>, <image>, or <custom-ident>.

<symbol>

<symbol> =
  <string>       |
  <image>        |
  <custom-ident>

<ul class="choices">
  <li>One</li>
  <li>Two</li>
  <li>Three</li>
  <li>None of the above</li>
</ul>

@counter-style options {
  system: fixed;
  symbols: A B C D;
  suffix: ") ";
}

.choices {
  list-style: options;
}

Specification
CSS Counter Styles Level 3 # counter-style-suffix

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`suffix`	91	91	33	No	77	No	91	91	33	64	No	16.0