In CSS, there’s an incredible variety of selectors, each with its unique role in targeting HTML elements for styling. While it's true that in most projects we may not use all of them, the value of understanding CSS selectors, especially advanced ones, cannot be overstated.
With utility-first frameworks like TailwindCSS becoming increasingly popular, some might think CSS selectors are losing their relevance. So, should we skip advanced selectors like attribute selectors or pseudo-selectors??

The answer is simple—skipping advanced CSS selectors would be a big mistake. Here's why:

  1. They are Indispensable in Styling Complex Scenarios Pseudo-selectors such as :nth-child() or :nth-of-type() give you unparalleled power in styling your web pages. For example, if you're working with a list of items and need to style every other item (zebra stripes for a table or list), these selectors make the task not only easier but also cleaner and more efficient.

  2. They Teach Core Principles of CSS. Advanced selectors are not just tools; they reflect the logic and structure of how CSS works. Understanding them deepens your knowledge of the cascade, inheritance, and specificity, which are essential for writing maintainable styles.

  3. They’re Crucial for Interviews and Problem Solving. Many interview questions often touch upon advanced selectors to test your grasp of CSS fundamentals. Skipping them could leave you unprepared for technical discussions or debugging sessions in real-world projects.

Also there have many more reason.

This is just my opinion. If you disagree, feel free to share your suggestions in the comments..