![css - Angular 12 mat-stepper: mat-step-icon-state-number changes its color by condition - Stack Overflow css - Angular 12 mat-stepper: mat-step-icon-state-number changes its color by condition - Stack Overflow](https://i.stack.imgur.com/wX00T.png)
css - Angular 12 mat-stepper: mat-step-icon-state-number changes its color by condition - Stack Overflow
Mat-Stepper: Change Line Color when step was completed (next() method) · Issue #10681 · angular/components · GitHub
Multiple mat-vertical-stepper inside Multiple mat-tab making all mat-step open by default · Issue #10979 · angular/material · GitHub
![css - Angular 12 mat-stepper: mat-step-icon-state-number changes its color by condition - Stack Overflow css - Angular 12 mat-stepper: mat-step-icon-state-number changes its color by condition - Stack Overflow](https://i.stack.imgur.com/GQK31.png)