@nomios/web-uikit/dist/components/dropdown/custom-components/custom-menu-list/CustomMenuList.css

Nomios' living web UIKit

/*
  Note: If you add a color here, please add it to "/stories/base/colors.css" as well
*/

.menuList {
    max-height: 20rem;
    overflow-y: scroll;
    background-color: #fff;
}