Description : Explanation of placeholder selectors in SASS.
Answer :
Placeholder selectors inSASS, defined with`%`, are used to create styles that can be extended by other selectors but do not generate any CSS output on their own. For example,`%placeholder { color: red; }` can be extended with`@extend %placeholder;`in other selectors. This helps in reducing redundancy and keeping the CSSDRY(Don't Repeat Yourself).