1. The first advertisement above is contained inside a div element with class attribute “textad”.

2. The class attribute is often used to point to A class name in a style sheet

3. (alternate identifier) supplies the recommended XML name for an element, class, attribute, etc. in some language.

4. In the following example we have three <div> elements with A class attribute with the value of "city".

5. Invoking the fit method on the VotingClassifier will fit clones of those original estimators that will be stored in the class attribute self.estimators_.