问为什么不包括我的mdDialog组件的SCSS文件？

EN

...

        let dialogRef = this.dialog.open(
            UserMessagingDialog,
            {
                data: {
                    'messages': this.messagesToShow,
                    'messageColors': this.messageColors,
                    'messageIcons': this.messageIcons
                },
                hasBackdrop: false,
                panelClass: 'messaging-panel'
            }
        );

        dialogRef.afterClosed().subscribe(result => {
            // angular.element('messaging .messaging-icon').removeClass('rotate-cw tinted');
        });
    }
}

@Component({
    selector: 'user-messaging-dialog',
    templateUrl: './user-messaging.dialog.html',
    styleUrls: ['./user-messaging.component.scss']
})
export class UserMessagingDialog {
    constructor(
        @Inject(MD_DIALOG_DATA)

        public data: any,
        public dialogRef: MdDialogRef<UserMessagingDialog>
    ) { }
}

.messaging-panel .message-text {
    padding-top: 2px;
    padding-left: 8px;
    white-space: normal;
}
/* ... plus about 80 more lines */