版本：
文件：
- https://cdn.bootcdn.net/ajax/libs/jquery-nice-select/1.1.0/css/nice-select.css
- https://cdn.bootcdn.net/ajax/libs/jquery-nice-select/1.1.0/css/nice-select.min.css
- https://cdn.bootcdn.net/ajax/libs/jquery-nice-select/1.1.0/css/nice-select.min.css.map
- https://cdn.bootcdn.net/ajax/libs/jquery-nice-select/1.1.0/js/jquery.nice-select.js
- https://cdn.bootcdn.net/ajax/libs/jquery-nice-select/1.1.0/js/jquery.nice-select.min.js