CSS Nesting Syntax and Benefits

CSS nesting allows for simplified and more efficient styling by nesting selectors inside each other. This feature eliminates the need for writing long and repetitive selectors, making the code more concise and readable. Nesting works by applying styles to a parent selector and then nesting additional selectors inside it. The ampersand symbol '&' is used as a reference to the parent selector, allowing for easy extension of styles. Nesting can also be used with media queries and container queries, making it adaptable to different screen sizes. CSS nesting is a syntax-based feature, meaning it can be transpiled and used in all browsers through PostCSS or similar tools.