ul.menuhorizontal{
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

ul.menuhorizontal li {
  float: left;
  cursor: pointer; 
}

ul.menuhorizontal li a {
  display: block;
  text-align: center;
  padding: 16px;
  text-decoration: none;
  border-radius:25px;
}

ul.menuhorizontal li a:hover {
  color:tomato;
}

ul.menuhorizontal li a:visited {
  text-decoration: none;
}