html {
  background: url(pencil.jpg) no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

body
{
    font-family: Helvetica, Sans-Serif;
    color: #000000;
    font-size: 15pt;

}

#box {
  border: 1px solid;
  width: 300px;
  padding: 10px;
  box-shadow: 5px 10px 18px #666666;
  background-color: #888888;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}