body {
  background-color: black;
  color: white;
  font-family: Verdana;
}
.square {
  background-color: white;
  width: 20%;
  height: 20%;
  padding-top: 0.5%;
  padding-bottom: 0.5%;
  margin: auto;
  text-align: center;
}
a:link
{
    color:#FFFFFF;
}

a:visited
{
    color:#FFFFFF;
}

a:hover 
{
    color:#FFFFFF;
}