版本：2.0.4
- https://cdn.bootcss.com/skeleton/2.0.4/skeleton.css
- https://cdn.bootcss.com/skeleton/2.0.4/skeleton.min.css
版本：2.0.3
- https://cdn.bootcss.com/skeleton/2.0.3/skeleton.css
- https://cdn.bootcss.com/skeleton/2.0.3/skeleton.min.css
版本：2.0.2
- https://cdn.bootcss.com/skeleton/2.0.2/skeleton.css
- https://cdn.bootcss.com/skeleton/2.0.2/skeleton.min.css
版本：2.0.1
- https://cdn.bootcss.com/skeleton/2.0.1/skeleton.css
- https://cdn.bootcss.com/skeleton/2.0.1/skeleton.min.css
版本：2.0
- https://cdn.bootcss.com/skeleton/2.0/skeleton.css
- https://cdn.bootcss.com/skeleton/2.0/skeleton.min.css
版本：1.2
- https://cdn.bootcss.com/skeleton/1.2/base.css
- https://cdn.bootcss.com/skeleton/1.2/base.min.css
- https://cdn.bootcss.com/skeleton/1.2/layout.css
- https://cdn.bootcss.com/skeleton/1.2/layout.min.css
- https://cdn.bootcss.com/skeleton/1.2/skeleton.css
- https://cdn.bootcss.com/skeleton/1.2/skeleton.min.css