My denomination recently did an excellent redesign of their Web site, making it completely responsive and easy to view on tablets and smartphones.
My denomination then updated the denominational bylaws so they are now only available as a PDF. Which means the bylaws are now neither responsive nor easy to view on tablets or smartphones.
Improve a Web site. Yay!
Then break it. Oops.
This is why it is essential to have processes in place to continually monitor a Web site’s usability. Because it is way too easy to do something stupid that breaks the functionality of even a modestly complex Web site (he says, speaking from personal experience). And because when you go from “Yay!” to Oops,” you need to be able to get back to “Yay!” as quickly as possible.