版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/pushy/2.0.0/css/pushy.css
- https://cdn.bootcdn.net/ajax/libs/pushy/2.0.0/css/pushy.min.css
- https://cdn.bootcdn.net/ajax/libs/pushy/2.0.0/img/arrow.svg
- https://cdn.bootcdn.net/ajax/libs/pushy/2.0.0/js/pushy.js
- https://cdn.bootcdn.net/ajax/libs/pushy/2.0.0/js/pushy.min.js