apply class on ngif code example
Example 1: Angular 8 ngClass If
[ngClass]="(step=='step1')?'my-class1':'my-class2'"
Example 2: ngif add class
[ngClass]="{'my-class': step === 'step1'}"
Example 3: Angular 8 ngClass If
[ngClass]="{1:'my-class1',2:'my-class2',3:'my-class4'}[step]"