div#navbar {
    text-align: center;
    width: 50%;
    margin-left: auto; margin-right: auto;
}

div#navbar > a > img {
  border: 6px double #888888;
  background-color: white;
  dmargin:4px;
  padding: 2px;
}

div#navbar > a > img:hover {
    background-color: #d6bdf0;
}