The number one priority for so many businesses these days seem to be to get your oh so precious consent in order track you with cookies, and don't you dare do anything on their website before you've given it!

Reading code is easier when you have line numbers, but how can you show line numbers in a <pre> tag? This can easily be solved with a few lines of JS and CSS, no need for a big external library.

Clicking links going to an external site can be annoying if you aren't prepared for that. To improve the user experience you should show some kind of indicator for external links.