After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：What is CSS?
CSS是（Cascading style sheets）的简称，翻译中文为层叠样式表
2020-05-080个赞
Courses in the relevant section：Derived selectors and attribute selectors
后代选择器：后代选择器可以选择任意一个后代（后代选择器是用空格隔开ul em） 子元素选择器：只能作为某元素指定的子元素（子元素选择器使用>号隔开例如ui>li）
2020-05-080个赞
Courses in the relevant section：Pseudo classes in CSS
：link 未被访问 ：visited 已被访问 ：hover 鼠标悬停时向元素添加一个样式 ：active 向被激活的元素添加样式 ：focus 向拥有键盘输入焦点元素添加一个样式
2020-05-080个赞
Courses in the relevant section：HTML document structure
margin:0px 21px 0px 0px margin对应的是上下左右
2020-04-291个赞
Courses in the relevant section：Xiaomi Mall homepage head navigation and drop-down box construction
position:relative相对定位
2020-05-260个赞
Courses in the relevant section：Composer download and installation
Composer phpComposer.com
2020-11-280个赞
Courses in the relevant section：1Python introduction
print：‘打印’
2020-05-310个赞
