src/frontend/packages/core/sass/components/mat-tabs.scss
// ==================================================
// Corrections to the Angular Material Design Library
// Material Card
// These should be submitted as issues upstream
// ==================================================
.mat-tab-link.mat-tab-fit {
min-width: auto;
}
.mat-tab-nav-bar.mat-primary.mat-background-primary {
.mat-tab-link.active-link.mat-tab-label-active {
opacity: 1;
}
}