Why is using the style-attribute in html bad?

Question

I have been told, as well as read that using the style attribute in html is considered bad/sloppy/poor form. Further, that all rendering specific bits should be divorced in

Answer 1

• Separation of concerns This makes it easy to replace the styles without changing the markup, or vice versa. Plus you can have one person working on CSS and another working on content

• Don't Repeat Yourself You can apply a style to many elements without having to repeat it over and over. Smaller pages means quicker load times using less bandwidth. Plus it's easier to modify later, because you can change it in one place in one file, instead of many places in many files.

• Cachability If the same style sheet is used on every page of your site, browsers can download it once and then cache it, instead of downloading the styles with the content of every single page. And they won't have to re-download it whenever the content of those pages changes.

• Multiple Versions It is easy to create multiple versions of the visual layout and appearance of your site since you just need to swap out the stylesheet file to change the appearance of every page. For instance, you can create a white-label version of a web application which your partners can re-skin to match their brand. See CSS Zen Garden for some great examples of how flexible this approach can be.