body {
  background-color: white;
  color: black;
  font-family: Lora;
  text-align: left;
  margin-left: 6em;
  margin-top: 5em;
  }
.tab { margin-left: 2em; }
table { margin: auto; }
th, td {
  border:2px solid black;
  text-align: center;
  padding: 0.5em;
}
.navigation{
  padding: 0.5em;
  color: black;
  background-color: white;
  width: 100%;
  text-align: left;
  outline: none;
  border: none;
  font-size: 15px;
  cursor: pointer;
  text-decoration-line: underline;
}
.active, .navigation:hover {
  background-color: #f1f1f1;
  color: black;
}