Progressive Enhancement is a web development strategy that ensures that your site is accessible to the largest possible audience. The most common definition of progressive enhancement is as follows:
Progressive enhancement is a large and contentious topic. One camp says that, in order to adhere to the strategy of progressive enhancement, pages should be layered so that basic content and page functionality only require HTML. See Progressive Enhancement: What It Is, And How To Use It for an example of this approach.
Another camp believes that this strict approach is unfeasible or unnecessary
for many modern, large-scale web applications and suggests using inline
critical path CSS in the document
<head> for absolutely critical page styles.
See Critical Rendering Path for more on this approach.
better than a blank page, because the blank page leaves users uncertain
about whether there's a problem with the page, their browsers, or their
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