.mdc-list-holder {
    position: absolute;
    background-color: #fff;
    overflow-y: auto;
}
.mdc-list-holder-up {
    box-shadow: 0px 5px 5px -3px rgba(0, 0, 0, 0.2), 0px -8px 10px 1px rgba(0, 0, 0, 0.14), 0px -3px 14px 2px rgba(0, 0, 0, 0.12);
}

.mdc-list-holder-down {
    box-shadow: 0px 5px 5px -3px rgba(0, 0, 0, 0.2), 0px 8px 10px 1px rgba(0, 0, 0, 0.14), 0px 3px 14px 2px rgba(0, 0, 0, 0.12);
}