A lesson learned, Backup your CSS file
Oh dear,
It happened. I accidently overwrote this site’s CSS file by accident and buggered it right up. I stupidly against my better judgement worked live for a while and never made a back up of the file.
My tip of the day: upload a second version of your CSS file and rename it to _mycss.css just so you can quickly revert it if you make a fatal error, like I did.
Gutted.
