Seeking Webflow Localization Tips for English CSS Adjustments

Looking for some help from people who have experience using Webflow Localization. I just upgraded and added English to my site and translated all the pages and stuff. As locale styling is only available on an expensive plan and I have some custom code, I wanted to know if somebody found a selector which helps me to address the css correctly only for the English locale? For example I have this hero section on the homepage and the underline effect is created by custom code with ::after and as the words in English are shorter than in German I would like to address the ::after on English only to make them less wide.