How to have only an English keyboard layout in a CSS file

Question

Theme: Plugin Development Sublime Text.

I'll give you an example:

1. I opened the CSS file
2. Pressed "shift+3" or "shift+4"
3. And I want to get the characters: "shift+3" will print: "#" and "shift+4" will print: "$"
4. But if I have a Russian keyboard layout, I will get characters by clicking on: "shift+3" will print: "№", and "shift+4" will print: ";"

The essence of the question: How to make sure that there is always an English keyboard layout in the -CSS file?

How it should work:

1. I opened a CSS file with a Russian keyboard layout

2. In the CSS file: I can't print Russian letters

3. In the CSS file: When pressing keyboard shortcuts, they work as if I have an English keyboard layout

I repeat the essence of the question: How to make sure that there is always an English keyboard layout in the -CSS file?