预览地址:
- 一栏布局;两栏布局;三栏布局:https://haluluyo.github.io/css_layout/layout.html
- flex布局:https://haluluyo.github.io/css_layout/flex.html
- 表单效果: https://haluluyo.github.io/css_layout/formlist.html
- alert效果: https://haluluyo.github.io/css_layout/alert.html
- 模态框效果: https://haluluyo.github.io/css_layout/position.html
- 导航栏效果: https://haluluyo.github.io/css_layout/navigation.html
- 3个盒子: https://haluluyo.github.io/css_layout/box.html