#html, body {
  top: 0px;
  right: 0px;
  bottom: 0px;
  left: 0px;
  width:680px;
  height: 100%;
  margin: auto;
}
a img {
border: 0;
}
li {
margin-left: 0;
margin-right: 0;
margin-top: 0em;
margin-bottom: 0em;
}