atrules

atrules

This article is In Progress.

Would separate header for readability or include hyphen if it requires a single word (at-rules or at rules vs atrules). Needs examples and explanation of the definition. A good start but considerably sparse for someone to land on this page and get clarification on at-rules.

Summary

At-rules are special instructions for the CSS parser. They are invoked by an at-keyword preceded by an "@" sign.

API Name	Summary
@charset	Specifies the character encoding of the style sheet.
@font-face	The @font-face CSS at-rule allows authors to specify online fonts to display text on their web pages. By allowing authors to provide their own fonts, @font-face eliminates the need to depend on the limited number of fonts users have installed on their computers.
@keyframes	Sets the keyframes for the CSS animation property.
@namespace	Declares the default namespace and binds a namespace to a namespace prefix.
@viewport	Specifies the size, zoom factor, and orientation of the viewport.