[dpezely]

Some differences between then and now are also different idioms such as CSS naming conventions.

See GetBEM.com - for Block, Element, Modifier naming.

For instance, current conventions are to put a class name on far more HTML elements than years earlier, and avoid using hierarchical specifiers. (Yes, I know, at first it may seem to defeat the cascading within "CSS" without the hierarchy, but it's more nuanced than first glance.) It's especially useful when hiring front-end/UI developers to maintain the project after your initial build, as many will have learned BEM at various coding bootcamps.