.ttip {
    position: relative;
  }
  
  .ttip .ttiptext {
    visibility: hidden;
    width: 160px;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px 0;
    
    /* Position the tooltip */
    position: absolute;
    z-index: 1;
    top: 100%;
    left: 50%;
    margin-top: 10px;
    margin-left: -20px;
  }
  
  .ttip:hover .ttiptext {
    visibility: visible;
  }