.item-tabs {
    display: flex;
    flex-wrap: wrap;
  }
  
  .item-tab_label {
    color: #222;
    border: solid 2px #222;
    position: relative;
    z-index: 1;
    cursor: pointer;
    flex: 1;
    padding: 5px;
    margin: 0 5px; 
    display: flex;
    align-content: center;
    justify-content: center;
    align-items: center;
    font-size: 16px;
    white-space: nowrap;
  }
  .item-tab_label:hover {
    opacity: 0.75;
  }
  .item-tab_label:active {
    opacity: unset;
  } 
  .item_description,
  .item_spec,
  .item_classification {
    flex: 100%;
    display: none;
    overflow: hidden;
  }
  
  input[name="item-tab_switch"] {
    display: none;
  }
  
  .item-tabs input:checked + .item-tab_label {
    color: #fff;
    background-color: #222;
  }
  .item-tabs input:checked + .item-tab_label::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 10px 0 10px;
    border-color: #222 transparent transparent transparent;
    display: block;
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -10px;
    transition: all 0.3s ease 0s;
    background: none;
  }
  
  #item-tab01:checked ~ .item_description,
  #item-tab02:checked ~ .item_spec,
  #item-tab03:checked ~ .item_classification {
    display: block;
  }
  
  .item_description,
  .item_spec,
  .item_classification {
    position: relative;
    animation: fadeIn 1s ease;
    padding: 30px 10px;
  }

  .item_description_add {
    background-color: #FDF5E6;
    padding: 8px;
  }