Here's some code which i not long ago wrote. I are convinced it provides a primary explanation of mixing course/ID names with pseudoclasses. These are typically all acknowledged in CSS as at-guidelines. They are Specific Directions for your browser, not directly linked to styling of (X)HTML/XML components in Web paperwork https://bookmarkleader.com/story19329100/the-prestashop-automatic-google-translation-geoip-diaries