table.dataTable tbody .select-checkbox{
  position: relative;
  text-align: center;
  vertical-align: middle;
}
.dataTables_info .select-info{
  margin-left: 1em;
  font-weight:bold;
}
table.dataTable tbody .select-checkbox::before{
  content: ' ';
  color: #555;
  background-color: white;
  font-size: 1.5em;
  width: 0.75em;
  height: 0.75em;
  line-height: 0.4em;
  margin-left: -6px;
  border: 1px solid #555;
  border-radius: 3px;
  display: inline-block;
  box-sizing: border-box;
}
table.dataTable tbody tr.selected {
  background-color: #d1e7ff;
}
tbody tr.selected .select-checkbox::before{
  content: '\2713';
}