Recently I am adjusting some styles of this site and I found that it does not take effect after the change.
Of course, the problem was solved in the end, so record it.
# The CSS has Cache, it's can link parameters like api.
style/xxx.css?20180808, and browser will caches css&js files to ensure its high speed browsing.
# So, we edited and saved css files, should to change the parameter value to ensure that the browser re-acquires a new file from the network.