Style index numbers of list items
Written byPhuoc Nguyen
Created
17 Mar, 2021
Category
Tip
Tags
CSS
By default, an ordered list prefixes each item with its index number. Since there is no actual element or CSS property that represents the index number, we can't add custom styles for it directly.
The approach is that we hide the original index numbers, and number the items ourselves. The first task is quite easy:
css
ol {
list-style-type: none;
}The index numbers start from zero, and increase by one after each item. It gives us a hint that we can use a CSS counter to represent the indices:
css
ol {
counter-reset: ol-counter;
}
li {
counter-increment: ol-counter;
}Finally, use the
`::before` pseudo element to display the number:css
li::before {
content: counter(ol-counter);
}#See also
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Phước Nguyễn