The rise of modern JS frameworks brought in more efficient concept of Front End programming. These inspired new approaches, such as CSS Module and CSS-in-JS, more scoped in working with CSS. It’s always a debate which is the best practice among these approaches. Some claimed CSS-in-JS eliminates developer’s most fear when dealing with CSS (the CSS file) with more dynamic approach. Some disagreed. If you are keen to know about CSS-in-JS and what should be considered when it comes to work with CSS, this talk is for you.