toggle buttons angular styles
@import '~@angular/material/theming';
@include mat-core();
$app-primary: mat-palette($mat-indigo);
$app-accent:  mat-palette($mat-pink, A200, A100, A400);
$app-theme: mat-light-theme($app-primary, $app-accent);
@mixin mix-app-theme($app-theme) {
  $primary: map-get($app-theme, primary);
  $accent: map-get($app-theme, accent);
  .mat-button-toggle {
    background-color: mat-color($primary);
    color: mat-color($primary, default-contrast);
  }
  .mat-button-toggle-checked {
    background-color: mat-color($accent);
    color: mat-color($accent, default-contrast);
  }
}
// Include the mixin
@include mix-app-theme($app-theme);