CSS offers Web designers many of the features commonly found in desktop publishing applications.
Curly braces mark the start and end of the style declaration that apply to the selector.
It's important to remember to separate each declaration with a semicolon. Let's start with a basic HTML file. CSS makes it easy to assign a style to a specific area by using classes. Classes let you identify a content area regardless of the tags used to create it and assign a style to it. You can define rules for classes just as easy as for regular tags except classes always start with a period.