:host ::ng-deep .scrollable-container {
    height: 100px;
    overflow-y: scroll;
}

:host ::ng-deep .background {
    padding-top: 60px;
    height: 300px;
    background-image: url(//zos.alipayobjects.com/rmsportal/RmjwQiJorKyobvI.jpg);
}