.tabs {
    z-index: 9;
    background-color: #f1f1f1;
    border: 1px solid #d3d3d3;
    text-align: center;
    min-width: 150px;
    min-height: 200px;
}

.dragg_header {
    padding: 10px;
    cursor: move;
    z-index: 10;
    background-color: #2196F3;
    color: #fff;
}