Угловый стиль
<div [ngStyle]="{'color':employee.country === 'India' ? 'orange' : 'red' }"></<div>
Grieving Gharial
<div [ngStyle]="{'color':employee.country === 'India' ? 'orange' : 'red' }"></<div>[ngClass]="{'my-class': step === 'step1'}"
<a [ngClass]="{'class1':array.status === 'active','class2':array.status === 'idle','class3':array.status === 'inactive',}">
[ngClass]="{'my-class': step=='step1'}"[ngClass]="(step=='step1')?'my-class1':'my-class2'"<button [class.disable]="1==1">Apply disable class when condition is true</button>