
David I. answered 09/05/19
Front End Software Engineer
Sass is a "tool" that is used to improve/extend CSS. You'll still be using CSS when you're using SASS so it's not technically "superior" to CSS.
But I do think that when using SASS with CSS (instead of only CSS) it can significantly increase the readability and scalability of your web applications and UI.
So for larger projects I would strongly recommend using SASS. But it might be overkill for small or personal projects.