css将样式应用于除最后一行中的所有元素之外的所有元素 [英] css apply styling to all elements except those in the last row

问题描述

我有一个产品类别页面，每行3个产品.我希望每一行的最后一行除外都应有边框底部.这应该没有边框底.最后一行可能包含1个，2个或3个<li>元素.

I have a product category page with 3 products per row. I want every row to have a border bottom except for the last row. This should have no border bottom. The last row may contain 1, 2, or 3 <li> elements.

我正在使用的当前代码将border-bottom属性应用于每个第三个<li>元素，这并不是我想要的.

The current code that I'm using applies the border-bottom property to every 3rd <li> element, which is not quite what I want.

CSS:

.products li {
    width: 33.33333%;
}

.products li:nth-child(3n){
    border-bottom: 1px rgba(51, 51, 51, 0.1) solid;
}

.products li:nth-child(2-PREVIOUS-SIBLING-ELEMENTS){
    border-bottom: 1px rgba(51, 51, 51, 0.1) solid;
}

HTML:

<ul class="products">
   <li>Product</li>
   <li>Product</li>
   <li>Product</li>
   <li>Product</li>
   <li>Product</li>
   <li>Product</li>
</ul>

推荐答案

我想我明白了.下面的第二个规则集说明了最后一行中任何数量的产品.

I think I figured this out. The second ruleset below accounts for any amount of products on the last row.

.products li:nth-child(3n){
    border-bottom: 1px rgba(51, 51, 51, 0.1) solid;
}

.products li:nth-last-child(-n + 3):nth-child(3n + 1),
.products li:nth-last-child(-n + 3):nth-child(3n + 1) ~ li {
    border: none;
}

http://jsfiddle.net/6rso3t85/

更好的小提琴，根据要求调整显示，并显示三个用例

A better fiddle, adjusting the display as asked, and showing the three use cases

http://jsfiddle.net/6rso3t85/1/

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