body {
      background: #000000;
      background-image: url(./exhibition/image/bg/);
      color: #888888;
      background-repeat: repeat;
      background-position: center top;
      background-attachment: fixed;
      text-align:center;
}
a {
color: #888888;
text-align:center;
}
a:hover {
color: #696969;
text-align:center;
}
a:focus, a:active {
color: #888888;
background: transparent;
font-style: italic;
text-align:center;
}