For the next 36 hours upwards of several people will remove the CSS — cascading style sheets — from their sites to show the underlying text for CSS Naked Day (or Naked CSS Day; I’m agnostic on the subject. And there doesn’t seem to be a reliable central site for the “cause”.)
This is to show good markup should be distinct from good design — an idea universally accepted among professional web designers but lost on many sites, particularly church sites, leading to clumsy design and time-sucking changes.
CSS acts like a suit of clothes, transforming the look and reading experience of a site, without changing the text or underlying structure.