XHTML-Transitional

1. Create and validate.

1. Use XHTML-transitional or XHTML-strict.
   • Help: Review our tutorials about XHTML-strict.
2. With CSS.
   • Help: Review our tutorials about CSS.
3. Run your work through the W3C Validation Service for XHTML — and the W3C CSS Validation Service — until your mark-up is valid.

   Help.

   • XHTML Validator.
   • XHTML Specs Part 1, Validation Exercises.
   • XHTML Specs Part 2, Validation Exercises.
   • CSS Validator.
   • CSS Validation Exercises.