classname changes in new version, how to ensure custom classnames applied at dom / nodes in ucare

Hi,

the new version of react-uploader has class names changes eg lc-simple-btn to uc-simple-btn, is there a simple way where I can inject my custom css at specific dom nodes in ucare dom, so to avoid any future styling issues.

At the moment, I had to use style overrides for specific classes / dom nodes

Regards
DP