Sorry, but that's as vague as your original post. The "open the HTML" can mean lot of different things. Please provide step by step instructions for reproducing the problem.

the files locally and on the server are identical(100%)
but when I open the HTML from the server, the changes are not being applied. so locally it looks correct. but when I open the server.html page it looks like the changes were not applied.
-the changes made were very minor, CSS changes.

Do you mean that WinSCP does not upload the file to the server, when you save it? Or that it uploads, but the changes do not show on the web?

hello,
I am coding in HTML & CSS for web development, we are using WinSCP as our FTP but when I save local files that are also in the server on WinSCP it's not updating the same files in the server. so for instance, I make changes to the code in the local hard drive and it won't update the changes on the files in the server.
any help on how to keep both changed at the same time? every time I save it locally, I want it to save on the server as well.