1. Label selector: select by label
2. Class selector: select by setting the class name for the label (syntax: .attribute name)
3.id selector: set the id for the label, and select the label by the id name (syntax: #attribute name)
1. Label selector: select by label
2. Class selector: select by setting the class name for the label (syntax: .attribute name)
3.id selector: set the id for the label, and select the label by the id name (syntax: #attribute name)