How can I find out what this code is?

Question

css

Good afternoon!

On the main page of the blog (they took a template and reworked it to fit our needs), a whole bunch of CSS code is displayed. Seoshnik ate baldness to be removed, but HOW? How can I find out what this code is? How to move it to a separate CSS file.. ?

I've already broken my head - where does it come from, and how to find it.

I would be very grateful for at least a kick in the right direction, at least for help on how to deal with it)





Ps And the most important question: why is it displayed in the code on the main page? It's like turning off...