课程
/前端开发
/HTML/CSS
/初识HTML(5)+CSS(3)-升级版
.first,span{ color:green; } 而不一定要 .first,#second span{ color:green; }
2016-03-02
源自：初识HTML(5)+CSS(3)-升级版 8-10
正在回答
表走开，后续会贡献新课程哦
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span有多个时要注明具体的那个span
举报
HTML(5)+CSS(3)基础教程8小时带领大家步步深入学习标签用法和意义
4 回答为什么这样也可以通过
5 回答这样是不是也可以呢。。。。。。span,.first{color:green;}
3 回答这样也可以吧？
2 回答这样也可以吧
1 回答为什么可以这样写
