Answer
Class and ID selectors identify elements differently. • A class is reusable and can match many elements. • An ID should identify one element in a document. • An ID selector has greater specificity than a class selector.
💡 Simple Example
.notice { color: navy; }
#urgent-notice { color: crimson; }
⚡ Quick Revision
Classes are reusable; IDs are unique and have higher selector specificity.