body {
  background-color: #77CCCC
}
#Navigation {
  background-color: #000000;
  color: #FFFFFF;
  display: flex;
  align-content: stretch;
  align-items: stretch;
  justify-content: center;
  flex-direction: row;
}
a:link {
  color: red;
}
a:visited {
  color: green;
}
a:hover {
  color: yellow;
}
a:active {
  color: purple;
}
li {
  margin-bottom: 20px;
}
ul {
  list-style-type: square;
}

table {
  display: flex;
  align-content: stretch;
  justify-content: center;
}

td {
  font-size: 25px;
}

form {
  font-family: Arial, serif;
  font-size: 25px;
}