For one of my clients I have to make a lot of tables and the styling has always been the tricky part in Joomla. If you want to save a lot of time and effort, once set up and installed, Tabulizer is a really excellent tool. For a very small fee, Dimitrios made my CSSheets for me and my IT people uploaded it into the site (I'm a marketer not a Computer Science graduate!). Dimitrio provides the best customer service on the planet - he even made me a video to show me how to use it. If you have to make tables in Joomla and you want to speed up the process - get Tabulizer.