## Benefits of Web Standards

### Standards

- Markup (HTML)
  Nu Html Checker
  `https://validator.w3.org/nu/`
- Style (CSS)
  CSS Validation Service
  `https://jigsaw.w3.org/css-validator/`
- Function (JavaScript)

### Benefits

- Improved Accessibility
  - People
  - Programs
    - Search Engines
    - Devices
- Stability
  - Forward-compatibility and backward-compatibility.
- Separation of Concerns (Structure, Style, Function)
  - simpler, cleaner pages
  - easier maintenance
  - easier redesign
- Validation provides baseline when you go to edit.

"Be liberal in what you accept, and
conservative in what you send"

"Postel's Law" or the "Robustness Principle"