File: calc-in-counter-001.xhtml

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>CSS Test: counter-* properties with a calc() expression</title>
  <link rel="author" title="Ondřej Žára" href="https://ondras.zarovi.cz/"/>

  <link rel="help" href="https://www.w3.org/TR/CSS21/generate.html#counters"/>
  <link rel="help" href="https://www.w3.org/TR/CSS21/generate.html#propdef-content"/>
  <link rel="help" href="https://www.w3.org/TR/CSS21/syndata.html#counter"/>
  <link rel="help" href="https://www.w3.org/TR/css-values-3/#calc-notation"/>
  <link rel="help" href="https://www.w3.org/TR/css-lists-3/#counter-properties"/>
  <link rel="match" href="calc-in-counter-001-ref.xhtml"/>
  <style type="text/css">

  body {
   white-space: nowrap;
  }

  #a { counter-reset: a calc(3 + 5); }
  #a::before { content: counter(a); }

  #b { counter-reset: b 0; counter-increment: b calc(4 + 6); }
  #b::before { content: counter(b); }

  </style>
 </head>
 <body>

 <p>The following two lines should be the same:</p>

 <div id="test">
  <span id="a"></span>
  <span id="b"></span>
 </div>

 <div id="reference">
  <span>8</span>
  <span>10</span>
 </div>

 </body>
</html>