.connected-sortable {
    min-height: 250px;
    border: 1px solid #ccc;
    padding: 10px;
    background: #f9f9f9;
    list-style: none;
}

.connected-sortable .list-group-item {
    cursor: move;
    margin-bottom: 5px;
}

.ui-state-highlight {
    height: 2.5em;
    line-height: 1.2em;
    background-color: #e0e0e0;
    border: dashed 1px #aaa;
}

.connected-scrollable {
    max-height: 300px;
    overflow-y: auto;
}

.border-danger {
    border: 2px solid #dc3545 !important;
}