How to find the desired page on the server and edit it?

Question

css

Page: https://7kpacok.ru/spa-uslugi/77-minut-blazhenstva...
The essence of the task: The position field is missing , you need to add it. Okay, I'll add...
But where can I find this page on the server? By what logic to find this page? I've been sitting and looking all day, I don't understand myself what I should see .. In general, I have no idea.
I would be grateful in advance for your help!

Answer 1

Download locally, open in the same storm, search the project for some key elements, such as classes or styles, find where the file is, change, profit.
In some engines, this will be more difficult to do, since the blocks are formed from separate pieces of code, and in some, in general, most of the markup lies in the base and cannot be found using this method.

Answer 2

For example: You can hover the cursor in the browser console on any style and the path where this style is located will be shown there, and start from it