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Column combinator

Draft
This page is not complete.

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The column combinator (||) is placed between two CSS selectors. It matches only those elements matched by the second selector that belong to the column elements matched by the first.

/* Table cells that belong to the "selected" column */
col.selected || td {
  background: gray;
}

Syntax

column-selector || cell-selector {
  /* style properties */
}

Examples

HTML

<table border="1">
  <colgroup>
    <col span="2"/>
    <col class="selected"/>
  </colgroup>
  <tbody>
    <tr>
      <td>A
      <td>B
      <td>C
    </tr>
    <tr>
      <td colspan="2">D</td>
      <td>E</td>
    </tr>
    <tr>
      <td>F</td>
      <td colspan="2">G</td>
    </tr>
  </tbody>
</table>

CSS

col.selected || td {
  background: gray;
  color: white;
  font-weight: bold;
}

Result

Specifications

Specification	Status	Comment
Selectors Level 4 The definition of 'column combinator' in that specification.	Working Draft	Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Column combinator (`A \|\| B`)	No	No	No No See bug 1605558.	No	No	No

	Mobile
	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
Column combinator (`A \|\| B`)	No	No	No	No	No	No