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 Color Palettes TODO

Directory Placement

CSS documents are separate files dedicated solely to styling.

Unlike HTML documents which can include bits of styling or scripts if they are minimal enough, CSS documents contain only styling rules. They do not require structural elements like HTML documents, but can contain just as many lines of code, if not significantly more.

A CSS document is given the .css extension. As with images and media, it is considered best practice to place your CSS documents in a separate child directory labeled either "css" or "style."