CSS3 get last element

How I can get the last element (hr) from the following code:

<div>
    <div>
        <span class="hr"></span>
    </div>

    <div>
        <span class="hr"></span>
    </div>

    <div>
        <span class="hr"></span> <!-- I need this -->
    </div>
</div>

.hr:last-child doesn't work for this.

Of course开发者_高级运维, DOM structure could be more complicated. I just need to fetch the last needed element.

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Your question isn't quite clear; there are several ways to get the last .hr element from your example, but you say "DOM structure could be more complicated." In order to answer your question, you need to mention what possible DOM structures you could have; in some it might be possible, in some it will not be.

Here is one way to get the .hr out of the last div:

div div:last-of-type .hr

Here's another way to get the .hr out of the last child of the outer div:

div :last-child .hr

If you need to get the last .hr element out of the document, regardless of what it's inside, then you can't do that in CSS. In CSS, you can only select the first, last, or nth element at one particular level of the hierarchy, you can't select the last element of some type regardless of what it's nested in.

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div:last-child .hr

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The following selector should work:

div *:last-child *:last-child

Demo: https://jsfiddle.net/78w3bofg/1/