mat.html

    <mat-form-field floatLabel="never">
        <input matInput 
               #searchInput="matInput" 
               type="text" 
               placeholder="Search"
               [value]="appState.todoStore.query" 
               (keyup)="appState.search($event.target.value)"
               autocomplete="off"/>
        <mat-icon [color]="searchInput.focused ? 'primary' : ''" 
                matSuffix>search</mat-icon>  
    </mat-form-field>