the parts of CSS

css-anatomy.css

/*  CSS Anatomy */

/* At-rules, start with an @ and can take a number of forms */
@at-rule;
@at-rule "";
@at-rule function();
@at-rule {};
@at-rule () {};

/* Selectors, the first part of a style rule before the declaration list */
selector {}
.class {}
#id {}
[attribute] {}
:pseudo-class {}
::pseudo-element {}

/* Declaration list, the {-block containing declarations */
{
  property: value;
  property: value;
}

/* Declaration, one assignment of a value to a property */
property: value;

/* Property, the name of the style thing you're setting */
property: ;

/* Value, the actual value you're setting to some property */
value