Talk:HTML/CSS: Making webpages/@comment-25768713-20141206051752/@comment-25297120-20141206052806

ID is unique. There is only one HTML element with the exact ID in each webpage. ... } If a webpage has 2 elements with id="banana", that is incorrect in modern web standards.
 * 1) banana {

Class is repeatable. You can apply CSS properties in a class to multiple HTML elements.

.banana { ... } If a webpage has 2 elements with class="banana", that is normal.