table#tarifPublicite {
    border-collapse: collapse;
    border: 1px black solid;
    margin-left: 100px;
    margin-top: 50px;
  }
  
  table#tarifPublicite th {
    border: 1px black solid;
  }
  
  table#tarifPublicite td {
    border: 1px black solid;
  }
  
  table#tarifPublicite td.prix {
    text-align: center;
    vertical-align: middle;
  }