版本：4.20.0
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/css/mdb.css
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/css/mdb.lite.css
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/css/mdb.lite.min.css
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/css/mdb.min.css
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/01.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/02.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/03.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/04.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/05.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/06.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/07.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/08.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/overlays/09.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/svg/arrow_left.svg
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/svg/arrow_right.svg
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/img/svg/flags.png
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/js/mdb.js
- https://cdn.bootcdn.net/ajax/libs/mdbootstrap/4.20.0/js/mdb.min.js