Often it happens that after making changes to our website, after refreshing in the browser we do not see them. This is due to the fact that the browser uses cache memory. It stores part of the page data on our hard disk, which improves the speed of loading the entire page, because the browser does not have to retrieve information from the server every time.
How to refresh browser cache?
In our case, the browser has even older versions of the files of our site. To see the new one we need to refresh our browser cache, Below are urls to official tutorial of most common browsers: