a.welcome:link {
  color:yellow;
  font-size:1em;
  font-weight:bold;
  text-decoration:none;
  background:Tomato;
}

a.welcome:hover {
  color:pink;
  font-size:1em;
  font-weight:bold;
  text-decoration:none;
  background-color:purple ;
}

a.welcome:visited {
  color:yellow;
  font-size:1em;
  font-weight:bold;
  text-decoration:none;
}