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#41290 CSS: Fix sibling-index() example to use counters with content #41339

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#41290 CSS: Fix sibling-index() example to use counters with content #41339

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5 changes: 3 additions & 2 deletions files/en-us/web/css/sibling-index/index.md
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Original file line number Diff line number Diff line change
Expand Up @@ -134,7 +134,7 @@ We include a {{htmlelement("nav")}} container and several children {{htmlelement

#### CSS

We make it visually appear as a numbered list by displaying the sibling-index before each {{htmlelement("div")}} element using the {{CSSxRef("::before")}} pseudo-element, setting the {{CSSxRef("content")}} to be the integer returned by the `sibling-index()` function.
We make it visually appear as a numbered list by displaying the list index in ::before. Since content expects a string, we set a CSS counter to the numeric `sibling-index()` function and output it with `counter()` function.

```css
div {
Expand All @@ -144,7 +144,8 @@ div {
}

div::before {
content: var(--list-index);
counter-set: ordered var(--list-index);
content: counter(ordered);
}
```

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