Question

I have a parent div, that holds three div’s. They are basically columns. I need to remove the margin on the last one but can’t get the right selector
HTML:

<div class="productContainer">
    <div class="productBox"></div>
    <div class="productBox"></div>
    <div class="productBox"></div>
 <!--/ productContainer --></div>

Here’s the CSS:

.productContainer {
    width: 980px;
    height: 400px;
    display: block;
    float: left;
}

How do you target the third child div of a parent? this should work no?
.productContainer > .productBox {
    width: 320px;
    height: 400px;
    display: block;
    float: left;
    margin: 0 10px 0 0;
}

.produtContainer > .productBox nth:child(3) {
    margin-right: 0;
}

Answer 1

While you can use the :last-child selector, it’s not going to work in any version of IE before 8. Generally what I do in this situation is add a last class to the last element in the list:

<div class="productContainer">
<div class="productBox"></div>
<div class="productBox"></div>
<div class="productBox last"></div>

And then add this rule below the .productContainer .productBox rule in the stylesheet:

.produtContainer .last {
margin-right: 0;
}