The :nth-child(n) selector matches every element that is the nth child of its parent. n can be a number, a keyword (odd or even), or a formula (like an + b).
2023年8月22日 — In other words, the :nth-child() selector selects child elements according to their position among all the sibling elements within a parent ...
2013年3月16日 — using nth-child in tables tr td ... Here is my code, I want <td> s with $ with a background of #CCC in all the <tr> s. Can any one help me how ...