The picture element as 

```
 <picture>
     <source  media="(max-width: 768px)" srcset="../assets/image1.png">
     <source  media="(min-width: 769px)" srcset="../assets/image2.png">
     <source  src="../assets/image3.png">
 </picture>

```

does not work in Angular 4
It selects the first source for all viewport widths, which in the above example is image1.png

Any solutions on this?