create scrollabledown table

hi all, I would like create a scrollable down table:
current code is

<div class="container">
  <div class="panel panel-primary">
    <div class="panel-heading">
      <h6 class="panel-title">Patient</h6>
    </div>
    <table class="table table-hover" id="dev-table">
      <thead>
        <tr>
          <th>Name</th>
          <th>Symptoms</th>
          <th>Mobile</th>
          <th>Address</th>
          <th>Update</th>
          <th>Delete</th>
        </tr>
      </thead>

        {% for p in patients %}
        <tr>
          <td> {{p.get_name}}</td>
          <td>{{p.symptoms}}</td>
          <td>{{p.mobile}}</td>
          <td>{{p.address}}</td>
          <td><a class="btn btn-primary btn-xs" href="{% url 'update-patient' p.id  %}"><span class="glyphicon glyphicon-edit"></span></a></td>
          <td><a class="btn btn-danger btn-xs" href="{% url 'delete-patient-from-hospital' p.id  %}"><span class="glyphicon glyphicon-trash"></span></a></td>
        </tr>
        {% endfor %}

    </table>
  </div>
</div>

in particular I want insert

{% for p in patients %}
        <tr>
          <td> {{p.get_name}}</td>
          <td>{{p.symptoms}}</td>
          <td>{{p.mobile}}</td>
          <td>{{p.address}}</td>
          <td><a class="btn btn-primary btn-xs" href="{% url 'update-patient' p.id  %}"><span class="glyphicon glyphicon-edit"></span></a></td>
          <td><a class="btn btn-danger btn-xs" href="{% url 'delete-patient-from-hospital' p.id  %}"><span class="glyphicon glyphicon-trash"></span></a></td>
        </tr>
        {% endfor %}

in a scroldown table setting the maximum row show before scrolldown is require
many thanks

One way to do this is to set a overflow-y css property on the table or tbody element.