CSS Fundamentals

Topic Overview

The Anatomy of Style

Select and Declare Elements and Rules Property and Value The Anatomy of Style TODO

Style Guide

Where to Style The Style Attribute The Style Element The Style Document TODO

CSS Documents

Directory Placement The <link> Tag Relationship Type Href The <link> Element TODO

CSS Applied

Comments in CSS Understanding Styling Applying Style TODO

Selector Types

Universal Selectors Element Selectors Class Selectors ID Selectors TODO

Cascading

Cascading in CSS Rules Order Specificity Setting Importance TODO

Exploring Color

Specifying Color Color Names RGB Values Hex Codes Saturated Color Desaturated Color (Grayscale) Combining Colors TODO

Using Color

Background Color Text Color Opacity Basic Positioning Learn More TODO

Property and Value

Inside the declaration, one specifies how to style the selected element with property-value pairs.

The pair is separated with a colon (:).

Additional declarations are separated with a semicolon (;) and are typically placed on new lines.

Property

The property is the aspect of the element that one wants to change, e.g., background color, color, font family, etc.

Value

The value defines how to change a property, such as ‘red’ or ‘Arial’.

CSS

p {
    property-1: value;
    property-2: value;
}

NOTE: As a rule, there should be no spaces in the property or the value. Each will be a non-breaking set of characters, with multi-word properties created using hyphens (-).