title: How to make sure the CSS work fine with all browsers without eye testing on each browser?
body: <p>Making CSS for one website to support for all browsers in different version is really difficult. Especially, it needs to have different browsers set up.
  I just wonder is it possible to test the CSS and make sure it works with all browsers without open each browser and manually check the layout?
  or 
  Is there any quick or standard way to do this?</p>