node_modules/@covalent/core/layout/layout.component.scss

:host {
  display: flex;
  margin: 0;
  width: 100%;
  min-height: 100%;
  height: 100%;
  overflow: hidden;

  ::ng-deep {
    // Ensuring sidenav content has flex column properties
    & > mat-sidenav-container .mat-drawer > .mat-drawer-inner-container {
      display: -webkit-box;
      display: -webkit-flex;
      display: -moz-box;
      display: -ms-flexbox;
      display: flex;
      flex-direction: column;
    }
  }
}