.nestable-column-scroll::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

.nestable-column-scroll::-webkit-scrollbar-track {
    background: #eee;
}
 
.nestable-column-scroll::-webkit-scrollbar-thumb {
    background: #666; 
}

.nestable-group-container > div {
    height: 100% !important;
}

.nestable-normal-item {
    border: 1px solid #ccc;
}

.nestable-clicked-item {
    border: 1px solid blue;
}