table tr, table td {
          line-height: 1.5;
          padding: 10px;
        }

                table.fixed-columns {
    width: 90%;
    margin: auto;
    font-size: 17px;
    table-layout: fixed;
  }

  .fixed-columns td:nth-child(1),
  .fixed-columns th:nth-child(1) {
    width: 20%;
  }

  .fixed-columns td:nth-child(2),
  .fixed-columns th:nth-child(2) {
    width: 20%;
  }

  .fixed-columns td:nth-child(3),
  .fixed-columns th:nth-child(3) {
    width: 30%;
  }

  .fixed-columns td:nth-child(4),
  .fixed-columns th:nth-child(4) {
    width: 30%;
  }

.nav-bar {
  margin: 0 0 50px 0;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
}

.nav-letter {
  display: inline-block;
  margin: 0 14px;
}

.nav-letter a {
  text-decoration: none;
}

.nav-letter a:hover,
.nav-letter a.active {
  text-decoration: underline;
}