Change style of pseudo elements in angular2

Question

Is it possible to change style of pseudo elements using [style] or [ngStyle] in angular2?

in order to get a blur effect on a div acts like

Answer 1

if you want to add other properties I did it like this:

and the css:

.progress::after {
  content: '';
  width: var(--porcentaje-width);
}

this worked for me :)