Include/Import in .scss

Need help, may be some one know how it work correct.
I've got some styles.scss file where got
```
@import '../../node_modules/material/themes';
@include mat-core();
@include angular-material-typography($some-custom-typografy)
```
Please give me answers, how should my BUILD.bazel look like? I don't find how I must write rules here.

The issue names styles.scss and asks how BUILD.bazel should define its imports and Angular Material includes. Start by locating the repository's SCSS or Closure Stylesheets build rules and existing BUILD.bazel examples; done means the requested stylesheet can be built with the Material imports resolved.

Written by the indexing model from the issue text.