.treegrid-indent {width:16px; height: 16px; display: inline-block; position: relative;}

.treegrid-expander {width:16px; height: 16px; display: inline-block; position: relative; cursor: pointer;}

.treegrid-expander-expanded{background-image: url(../img/collapse.png); }
.treegrid-expander-collapsed{background-image: url(../img/expand.png);}

#docs_table tbody tr[class*="treegrid-parent-"] > td {
    background-color: #eef6ff !important;
}

#docs_table tbody tr[class*="treegrid-parent-"] td:first-child {
    border-left: 4px solid #0d6efd;
}