- Add more card inner shadow; - Less margin-bottom after minicard.
- Add more card inner shadow;
- Less margin-bottom after minicard.

Thanks pravdomil and xet7 !

Related #1690
Related https://github.com/wekan/wekan/pull/1713

wekan/wekan,GhassenRjab/wekan,libreboard/libreboard,GhassenRjab/wekan,wekan/wekan,wekan/wekan,wekan/wekan,GhassenRjab/wekan,libreboard/libreboard,wekan/wekan