Yes sure!
try to open this link from any browser and css custom works (https://www.ilgossip.net/2018/09/20/lory-del-santo-choc-a-verissimo-mio-figlio-si-e-suicidato-per-un-problema-cerebrale/)
try to open the facebook page from FB mobile official app (https://www.facebook.com/ilgossip.net) and open any article and you will see old font size from original css theme
