body {
  background-color: #808080;
}
#container {
  border: 1px solid black;
  background-color: #FFFFFF;
  width: 600px;
  margin-left: auto;
  margin-right: auto;
  padding: 10px;
}
#footer {
  text-align: center;
  font-weight: bold;
  font-size: 9px;
}