Update blockUI message without momentarily unblocking the UI (javascript)

Yes adding custom CSS to certain elements to control styles is great, and really needed for our implementation.

One of the most important parts of custom CSS for us is setting up custom styling on certain elements specifically for printing. For instance creating a custom “no-print” class that we can apply to certain elements to make them not show up on a printed page, or re-styling certain elements to have a better printed layout or sizing.