Table
<table class="table"> <tr class="thead"> <th> Ipsum </th> <th> Ipsum </th> <th> Ipsum </th> <th> Ipsum </th> <th> Ipsum </th> </tr> <tr> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> </tr> <tr> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> </tr> <tr> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> <td> Ipsum </td> </tr> </table>
CSS
.thead{background:#f1f1f1;}
.table td{border-bottom: 1px solid #dee2e6;}