.css is not working

.css is not working

https://jsfiddle.net/martaklopf/q62yttrc/

Hello!
I was trying to do something really simple, which is:
-hover on the date and get text in another div to change
-once the text in the second div changes to a specific set of words, the background color changes.

Neither of them are working in the jsfiddle I linked, and I feel like there is a really obvious solution as to why but I can't fissure it out.

Thank you :)