Как сделать прижатый к низу футер?

<div class="container">
    <nav>
        <mat-toolbar color="primary" class="nav-panel">
            <mat-toolbar-row fxLayoutGap="20px">
                <a [routerLink]="homeToggle(toggle)" [routerLinkActive]="['active']">Expense Manager
                </a>
                <span class="example-spacer"></span>
                <a routerLink="report" routerLinkActive="active">Report</a>
                <a routerLink="expense" routerLinkActive="active">Add Expense</a>
                <a *ngIf="toggle" routerLink="profile" class="user-data" fxLayoutGap="10px"
                   fxLayoutAlign="center center">
                    <span class="nav-panel__name" align="middle">{{userName}}</span>
                    <img [src]="userAvatar" alt="test" id="avatar">
                </a>
                <a [routerLink]="loginToggle(toggle)"
                   routerLinkActive="active-link"
                   [routerLinkActive]="['active']">
                    {{toggle ? 'Logout' : 'Login'}}
                </a>
            </mat-toolbar-row>
        </mat-toolbar>
    </nav>

    <main>
        <router-outlet></router-outlet>
    </main>

    <footer>
        <mat-toolbar color="primary">
            <mat-toolbar-row fxLayoutAlign="center center">
                <div class="container">
                    <p class="footer-text">&copy; Copyright 2018 | Igor Shvets</p>
                </div>
            </mat-toolbar-row>
        </mat-toolbar>
    </footer>
</div>

.container {
    height: 100%
}