Errata

There is an semicolon between the property and value on the 2nd line of the table instead of a colon: "margin-left; 1.25em;"

Note from the Author or Editor:
[orrect as supplied]

"With greater ease" reads poorly; replace with "more easily"

The final sentence ("The latter element...") should in fact be joined to its predecessor in order to keep the paragraph from being a trainwreck, but ideally that entire paragraph would be rewritten - it runs on.

Change the example "first-letter" in item 4 to ":before, :after". Change "[selected="selected"]" in item 5 to "[type="text"]".

"made" in "makes a clear distinction made" is superfluous

Text nodes would ideally be mentioned in here somewhere.

Typo: insert "to" after "applicable" (i.e., "applicable TO mobile device displays")

"called @import" should read "called via @import"

Accuracy: The * html low pass filter is briefly explained in Chapter 14 and the underscore hack is similarly treated in Chapter 4, but low pass filters are not given their own dedicated passage in the book as was originally intended when this paragraph was written.

"asynchronously" before "request and insert" should be emphasized, by way of underscoring its status as the "A" in "Ajax".

Transparency: The callout should be edited to *further* emphasize that the id nomenclature displayed is the author's, not necessarily a nomenclature that is in common use

"the the" at beginning of callout needs repair

Accuracy: the style element is also primed for abuse in Chapter 3.

The final passage in the left column is a trainwreck: change to "the closing tags will rest in the /reverse/ order of their opening counterparts."

Accuracy: change "but isn't" too "but often isn't"

Doug Petersen's name is misspelled, it should be "Peterson"

Jarring omission: the title "stylist" gets a lot of play in the book, but this paragraph was never edited to reflect that evolution.

Accuracy: Sun was bought by Oracle Corp. while the book was being written, which change didn't make it into the copy in time.

Accuracy: validators do count as an objective enforcement mechanism, to a point. This language should be softened.

Accuracy: the question of framework deployment is raised briefly (without endorsement) in Chapter 5.

The word "made" should be removed.

Note from the Author or Editor:
The reader's suggestion is excellent.

Should be:
"nesting opens the"

"... they should be attached to the html element, instead of the html element."

One of these "html" instances should be something else.

Note from the Author or Editor:
Change second instance of "html" in this passage to "body"