
':before' class doesn't work as expected with current versions of xstatic-mdi and PyScss. It's a temporary workaround with copy ':before' styles from MDI directly into the Material theme. Closes-Bug: #1771559 Co-Authored-By: Akihiro Motoki <amotoki@gmail.com> Change-Id: I969ad70065c580ba90bb0a050c7a9cf242d805ec