.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
  }
  .tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
  }
  .tab button:hover {
    background-color: #ddd;
  }
  .tab button.active {
    background-color: #ccc;
  }
  .tabcontent {
    display: none;
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-top: none;
  }
  .premier{
    background-color :#82f574;
  }
  .dernier{
    background-color: #f66a54;
  }
  .legende{
    margin-left: auto;
    margin-right: auto;
    padding-top: 50px;
    padding-left: 50px;
    width:500px;
    height: 250px;
    border :solid black 10px;


  }