Sequential CSS3 animation

Question

I'm wondering if it is possible to fade in a list of items sequentially using CSS3 only?

HTML would be something like this:

<ul>
    <li>item 1</li>
    <li>item 2</li>
    <li>item 3</li>
    <li>item 4</li>
    <li>item 5</li>

    <li>item 6</li>
    <li>item 7</li>
    <li>item 8</li>
    <li>item 9</li>
    <li>item 10</li>

    <li>item 11</li>
    <li>item 12</li>
    <li>item 13</li>
    <li>item 14</li>
    <li>item 15</li>
</ul>

And when the UL gets the class "fadeout" it would be cool if first "item1" fades out (during 2 seconds) once this is finished fade out the next one("item2") and so on until all items are faded out.

I know how to do this using jQuery but it would be nice if this was possible using CSS3 only? Any ideas if this could be possible?

EDIT: I'm really looking for a solution that also works when you don't know how many items are in the list. it could be 1 it could be a 100?

EDIT: Apparently making this for a variable amount of elements is impossible using CSS only, so the best CSS solution is for a fixed number of items. Otherwise you will have to use JS.

Thx for the responses!

Answer 1

This would work:

HTML:

<ul class="fadeout">
    <li>item 1</li>
    <li>item 2</li>
    <li>item 3</li>
</ul>

CSS:

ul.fadeout li:nth-child(1){
    -webkit-animation: fadeOut 2s linear forwards;
}
ul.fadeout li:nth-child(2){
    -webkit-animation: fadeOut 2s linear 2s forwards;
}
ul.fadeout li:nth-child(3){
    -webkit-animation: fadeOut 2s linear 4s forwards;
}
ul.fadeout li:nth-child(1){
    -webkit-animation: fadeOut 2s linear forwards;
}
@-webkit-keyframes fadeOut {
    0% { opacity: 1; }
    100% { opacity: 0; }
}

http://jsfiddle.net/fGAZr/