.my_network_table {

  margin-left: 25%;
  margin-right: auto;

    border-collapse: separate;
    border-spacing: 0;
  table, td {
    border: 1px solid black;
    border-radius: 5px;
    -moz-border-radius: 5px;
    padding: 5px;
    border-collapse:separate;
    border: solid #ccc 1px;
    border-top-left-radius: 10px 10px;
    border-top-right-radius: 10px 10px;
    border-bottom-left-radius: 0px 0px;
    border-bottom-right-radius: 0px 0px;
  }

  thead tr {
    background-color: black;
    color: white;
    padding: 5px;
    border-right: 1px solid white;
  }

}