Responsive table with td which go under one another

Question

I want to make my table responsive but I don't know how to use media-queries, can somebody help me? My goal is to make my td act like blocks, going under one another if the screen size is smaller.

Current code:

td{border:1px dotted red;background-color:red;color:white;}

p{font-family:'Varela Round';font-weight:bold;text-align:center;}

<table width="100%" cellpadding="0" cellspacing="5">
  <tbody>
    <tr>
      <td><p>SOCIETES</p></td>
      <td><p>CONTACT</p></td>
      <td><p>EMAIL NOMINATIF</p></td>
      <td><p>OPT OUT</p></td>
      <td><p>LIGNES DIRECTES/MOBILES</p></td>
    </tr>
  </tbody>
</table>

Answer 1

You can change the td from display:block to display:table-cell at a minimum width using media queries for a mobile first approach.

td{
  display:block;
  width:auto;
  border:1px dotted red;
  background-color:red;
  color:white;
  margin-bottom:10px;

}

@media only screen and (min-width: 70em) {
  td{
    display:table-cell;
    border:1px dotted red;
    background-color:red;
    color:white;
    margin-bottom:0px;
  }
}


p{font-family:'Varela Round';font-weight:bold;text-align:center;}

<table width="100%" cellpadding="0" cellspacing="5">
  <tbody>
    <tr>
      <td><p>SOCIETES</p></td>
      <td><p>CONTACT</p></td>
      <td><p>EMAIL NOMINATIF</p></td>
      <td><p>OPT OUT</p></td>
      <td><p>LIGNES DIRECTES/MOBILES</p></td>
    </tr>
  </tbody>
</table>