HTML5 is the fifth and current major version of HTML. HTML5 introduced many new elements, attributes, and behaviors. While HTML5 also aimed to be
backward-compatible with common parsing of older versions of HTML, many old attributes were deprecated.
The main reason these attributes were deprecated in HTML5 is to separate the concerns of content structure (HTML) and presentation (CSS). This is a
fundamental principle of modern web design known as the separation of concerns, which provides multiple advantages:
- Maintainability: By separating content and presentation, you can change the look and feel of a website without touching the HTML. You only need
to modify the CSS.
- Reusability: CSS styles can be reused across multiple pages, making it easier to keep a consistent look and feel across an entire website.
- Accessibility: Using CSS for presentation makes it easier to create websites that are accessible to users with disabilities. For example,
screen readers can more easily interpret web content when it’s separated from the presentation.
What is the potential impact?
Deprecated attributes are not guaranteed to be supported by all browsers, especially newer ones. This can lead to inconsistent behavior or
appearance across different browsers.
