Preface
If you are a web designer or document author interested in sophisticated page styling, improved accessibility, and saving time and effort, this book is for you. All you really need to know before starting the book is HTML 4.0. The better you know HTML, the better prepared you’ll be, but it is not a requirement. You will need to know very little else to follow this book.
This fifth edition of the book was finished at the end of 2022 and does its best to reflect the state of CSS at that time. Anything covered in detail either had wide browser support at the time of writing or was known to be coming soon after publication. CSS features that were still being developed or were known to have support dropping soon are not covered here.
Conventions Used in This Book
The following typographical conventions are used in this book (but make sure to read through “Value Syntax Conventions” to see how some of these are modified):
- Italic
-
Indicates new terms, URLs, email addresses, filenames, and file extensions.
Constant width-
Used for program listings, as well as within paragraphs to refer to program elements such as variable or function names, databases, data types, environment variables, statements, and keywords.
Constant width italic-
Shows text that should be replaced with user-supplied values or by values determined by context.
Tip
This element signifies a tip or suggestion.
Note
This element signifies a general note.
Warning
This element indicates a warning or caution. ...
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