How Can I Customize Ordered Lists in Firefox 3 Using CSS?

Customizing Ordered Lists in Firefox 3

Left-aligning List Numbers:

To left-align the numbers in an ordered list, use the following code:

li::before {
  display: inline-block;
  content: counter(item) ") ";
  counter-increment: item;
  width: 2em;
  margin-left: -2em;
}

This code creates a pseudo-element before each list item that displays the number followed by a close parenthesis. The number is left-aligned within a fixed width of 2em, and the margin-left property ensures that it is indented from the list item.

Changing the Number Character:

To change the character after the number in an ordered list, modify the value of the content property in the li::before declaration. For example, to use a period instead of a parenthesis, use the following:

content: counter(item) ".";

CSS Solution for Alphabetic/Roman Lists:

To convert an ordered list from numbers to alphabetic or Roman characters without using the type attribute, use the counter-reset, counter-increment, and list-style-type properties:

ol {
  counter-reset: item;
}
li {
  counter-increment: item;
  list-style-type: none;
}
li::before {
  display: inline-block;
  content: counters(item, ".") " ";
}

This code resets the item counter to start from 1, increments it for each list item, and hides the default numbers using list-style-type: none. The content property then creates a pseudo-element that displays the alphabetic or Roman character followed by a period.

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