How not to load a page from the cache?

Question

PHP

I made a small site with instructions for work. Not cms, the usual raw layout. There is a list of instructions, for example 10 points. When I add the 11th item (I just write with notepad++), this 11th instruction can only be seen after ctrl+F5, otherwise there will be 10, day after day, the 11th item will not appear. Googling, I tried to change the name of the style file, (not updated), then stuck Last-Modified, and still the result = 0. Tell me how to make the page load from the server, and not from the cache, if I changed something on it.

Answer 1

Add a number after the file name in the connection string ?v=1
When updating, change the number
Example
<link src="style.css?v=1"></link>

Answer 2

Last-Modified to html text? it's like a header in general. I suppose that you still have the
Expiried header sent to the server, for example, a year ahead.