批改状态:合格
老师批语:这写的有些简单,不光光是贴出代码,建议详细些,重要代码加上效果图会更好!
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>结构伪类选择器:不分组(不区分元素类型)</title></head><style>.box{width: 330px;height: 330px;margin: 0px auto;background-color: #818181;text-align: center;}.item{width: 100px;height: 100px;float:left;border: white 1px solid;margin: 4px;line-height: 100px;font-size: 2rem;color: white;}/* 分组结构伪类分二步:1.元素按类型进行分组。2.分组中根据索引进行选择。 */.box span:last-of-type{background-color: lightgreen;}/* 匹配任意一个元素 */.box span:nth-last-of-type(-n+5){background-color: maroon;}</style><body><div class="box"><div class="item">1</div><div class="item">2</div><div class="item">3</div><span class="item">4</span><span class="item">5</span><span class="item">6</span><span class="item">7</span><span class="item">8</span><span class="item">9</span></div></body></html>
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号