Pros:-

• an interesting feature, joyfully change the look of the page.
• very easy to use.
• you can use all the features of CSS as per your requirement.
• very handy tool for application developers.
• remove the mapping between the components and styles.
• The "styled" method works accurately on all of your own or any third-party components as well.
• you can extend your style according to your creativity.
• full theaming support.
  Cons:-
• templates needs some improvement.