Provision for custom styling to accept css class

[philipjohn007]

I started using ngx-avatar recently in our project as it seemed to match all our requirements.

But I see that currently application of custom styling is through style property in ngx-avatar. There is no provision to accept css classes for this. We use variables in our scss classes and it would nice to reuse them for the custom styling of ngx-avatar as well. So it would be great to accept css classes also apart from the style property.

Due to the current approach of hard-coding the style in the component, we get the following warning as well.

WARN: 'WARNING: sanitizing unsafe style value [object Object] (see http://g.co/ng/security#xss).'