WordPress Dashboard dropdown not working. (WordPress Messed up)

Hi, I’m really not an expert when it comes into this kind of stuff. I just wanted to know what is happening on my site. The body styles are deleted: https://lifeunsettled.com/

And my wordpress dashboard kind of messed up. There’s no dropdown on my dashboard menus when I hover my mouse, and some of it are looking weird and lost in positions. Take a look at here: https://i.imgur.com/wbQciv5.png

I reinstalled my theme and framework. WordPress are updated.