In addition to the unique property/value pairs that CSS offers, there are also a small handful of language-wide features that can come in handy, including a few that are brand new in the spec. These often go unnoticed, especially by beginners, because when CSS properties and their possible values are discussed (in tutorials, books, or even in the spec), these features are usually omitted for brevi
![Language-wide Features in CSS](https://cdn-ak-scissors.b.st-hatena.com/image/square/e374ec079d206f3680f43a19fa931e7d5137a59c/height=288;version=1;width=512/https%3A%2F%2Fs3.amazonaws.com%2Fimpressivewebs%2F2013-08%2Fcss-wide.jpg)