th{
    font-size:25px;
  }
  td{
    font-size: 20px;
  }
  .head {
    font-weight:bold;
    color: blue;
    font-size: 25px;
  }
  sup{
    color:black;
    font-style: italic;
  }
 pre code {
    background-color: #eee;
    border: 1px solid #999;
    display: block;
    font-size: 20px;
    white-space:pre-wrap;
  }
.gray {
  background-color: #eee;
  border: 1px solid #999;
  font-size:20px;
  padding:20px;
}
  .head {
    background-color: #E2FCFC ;
    padding: 10px;
  }
  .subhead {
    margin-left:10px;
    font-size: 22px;
    font-weight: bold;
    color: #028C8A;
  }