table.tree {

  border-collapse: collapse;

}

table.tree td {

  padding: 0px;

}

div.tree_cell {

  border: 1px solid black;

  margin-top: 2px;

  margin-bottom: 2px;

  margin-left: 0px;

  margin-right: 0px;  

  padding-top: 2px;

  padding-bottom: 2px;

  padding-left: 5px;

  padding-right: 5px;

}

div.selected {

  border: 2px solid black;

  background-color: #ccc;

}

table.tree td.tree_cell {

  padding: 0px;

}

table.tree td.tree_cell_1_1,

td.tree_cell_1_2 {

  border-bottom: 1px solid black;

}

table.tree td.tree_cell_1_3 {

  border-right: 1px solid black;

}

table.tree td.tree_cell_1_4 {

  border: 0px;

}

table.tree td.tree_cell_2_1,

td.tree_cell_2_3 {

  border-right: 1px solid black;

}

table.tree td.tree_cell_2_2,

td.tree_cell_2_4 {

  border: 0px;

}

table.tree td.tree_cell_3_1,

td.tree_cell_3_3 {

  border-right: 1px solid black;

}

table.tree td.tree_cell_3_2 {

  border-bottom: 1px solid black;

}

table.tree td.tree_cell_3_4 {

  border: 0px;

}

table.tree td.tree_cell_4_1 {

  border-right: 1px solid black;

}

table.tree td.tree_cell_4_2 {

  border-bottom: 1px solid black;

}

table.tree td.tree_cell_4_3,

td.tree_cell_4_4 {

  border: 0px;

}

table.tree td.tree_cell_5_1,

td.tree_cell_5_2 {

  border-bottom: 1px solid black;

}

table.tree td.tree_cell_5_3,

td.tree_cell_5_4 {

  border: 0px;

}

table.tree td.tree_cell_0_1,

td.tree_cell_0_2,

td.tree_cell_0_3,

td.tree_cell_0_4 {

  border: 0px;

}