XHTML Strict Specs

DTD (Document Type Declaration):

• Rule.
• Reason.
• Placement.
• XHTML 1.0 strict DTD.

Character Encoding for Character Set:

• Rule.
• utf-8
• Placement.
• Explanation.

Slash to close tags:

• Rule.
• Tag-Pairs.
  • Nesting.
• Stand-Alone Tags.

Lower-case letters:

• Rule.
• Examples
• Caution.

Double quotation marks around attribute value:

• Rule.
• Examples.
• Caution.

Alt attribute:

• Rule.
• Reason.
• Examples.

Deprecated Elements:

• Rule.
• Reason.
• Guidelines:
  • Don't Use:
    • lists, short.
    • exceptions.
  • Avoid / Replace to mark important text.
  • OK to Use.
• Lists, Fuller:
  • Deprecated Tags.
  • Deprecated Attributes.
  • Proprietary Elements.
• Caution.
• Learning Method.

Validation Exercises, Part 1:

• Directions.
• Exercise 1, DTD (DOCTYPE) .
• Exercise 2, character set.
• Exercise 3, closing slash in a tag-pair.
• Exercise 4, closing slash in a stand-alone tag.
• Exercise 5, lower-case letters.
• Exercise 6, nesting.
• Exercise 7, deprecated attribute.
• Successful Results.

Tasks.