.tooltip {
    position: relative;
    display: inline-block;
    border-bottom: 1px dotted black;
    opacity: 70%;
  }
  
  .tooltip .tooltiptext {
    visibility: hidden;
    background-color: black;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px 0;
  
    /* Position the tooltip */
    position: absolute;
    z-index: 1;

    width: 180px;
    bottom: 100%;
    left: 50%;
    margin-left: -60px;
  }
  
  .tooltip:hover .tooltiptext {
    visibility: visible;
  }
.w3-button{
  font-size:200%;
  margin-top:10px;  
  -webkit-border-radius: 20px;
  -moz-border-radius: 20px;
  border-radius: 20px;
  
}



#title {
  margin-bottom: 0px;
}