版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/social-sharing/1.7.2/css/kraken-buttons.css
- https://cdn.bootcdn.net/ajax/libs/social-sharing/1.7.2/css/kraken-buttons.min.css
- https://cdn.bootcdn.net/ajax/libs/social-sharing/1.7.2/css/social-sharing.css
- https://cdn.bootcdn.net/ajax/libs/social-sharing/1.7.2/css/social-sharing.min.css