HTML常用于在网页中显示内容,当然,还可以是布局,但是比较不方便,所以,引进了CSS
CSS全称Cascading Style Sheets,中文名:层叠样式表
帮助文档:CSS.chm
作用:布局和美化网页
特点:
Css规则
定义 使用
定义 使用
定义 使用
定义 使用
定义 使用
定义 使用
HTML中使用CSS的方式
三种格式的优先级,就近原则:内联式>内嵌式>外链式
内联元素与块级元素
CSS字体属性
CSS背景属性
小技巧:可设置一个区域的
CSS文本属性
CSS边框属性
CSS列表属性
DIV+CSS页面布局
- 内容与布局分离
- 代码简洁,提高页面浏览速度
- 易于维护和修改
- 提高搜索引擎对页面的索引效率
W3C盒子模型
DIV定位
DIV的显示

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