html - 三列布局设计的第 n 个子属性？

Question

如何将第 nth-child 属性实现到帖子循环显示的三列布局。

现在我想为

指定第n个子属性

1st,4th,7th,10th,13th child respectively and so
and
2nd,5th,8th,11th,14th child respectively and so on 
and 
3rd,6th,9th,12th ,15th child respectively and so on 

针对不同的 CSS

Answer 1

你可以像这样使用nth-child。我在演示中将其全部用作 div。

HTML:

<div>1</div><div>2</div><div>3</div>
<div>4</div><div>5</div><div>6</div>
<div>7</div><div>8</div><div>9</div>
<div>10</div><div>11</div><div>12</div>
<div>13</div><div>14</div><div>15</div>

CSS:

div {width:33%; background:grey; height:50px; float:left;}
div:nth-child(3n-1){background:green;}
div:nth-child(3n){background:blue;}

DEMO