I'm using a browser that is outdated. How do I update my email brower?

My yahoo email is outdated how do I update? My browser that I am using now they say is the classical one and the background is white instead of the usual blue

Sharon: How to update browsers: https

How to update browsers: https://www.computerhope.com/issues/ch001388.htm Yahoo doesn't support Internet Explorer. It is obsolete. Yahoo only supports Firefox, Chrome, Safari, and Edge: https://help.yahoo.com/kb/sln4556.html