Minor-ish Site Update

Decided to make text in the HTML code tag easier to read by increasing the font size a smidge and adding a grey background because it was getting annoying for me to try to read when proofreading posts. A late change, but at least a welcome one. (Also I forgot how I usually do these and couldn't easily find a previous one, so it's like this this time. Yay 2.2.0!)