版本：16.1.3
- https://cdn.bootcdn.net/ajax/libs/smooth-scroll/16.1.3/smooth-scroll.js
- https://cdn.bootcdn.net/ajax/libs/smooth-scroll/16.1.3/smooth-scroll.min.js
- https://cdn.bootcdn.net/ajax/libs/smooth-scroll/16.1.3/smooth-scroll.polyfills.js
- https://cdn.bootcdn.net/ajax/libs/smooth-scroll/16.1.3/smooth-scroll.polyfills.min.js