How to conditionally add classes in Angular using *ngClass
Angular offers us different ways to add classes conditionally to the html elements.
First way
[class.my-class]="step=='step1'"
Second way
[ngClass]="{'my-class': step=='step1'}"
Third way
[ngClass]="(step=='step1')?'my-class1':'my-class2'"
Adding multiple classes
[ngClass]="{'my-class': step=='step1', 'my-class2':step=='step2' }"