set ng class from component code example
Example 1: Angular 8 ngClass If
[ngClass]="(step=='step1')?'my-class1':'my-class2'"Example 2: Angular 8 ngClass If
[class.my-class]="step=='step1'"[ngClass]="(step=='step1')?'my-class1':'my-class2'"[class.my-class]="step=='step1'"