body {
  background-color: black;
}

#BoxCenter {
  background: url(images/GreenBackground.jpg) no-repeat;
  position:absolute;
  top: 50%;
  left: 50%;
  width:800px;
  height:600px;
  margin-top: -300px; /*set to a negative number 1/2 of your height*/
  margin-left: -400px; /*set to a negative number 1/2 of your width*/
  background-color: black;
  overflow: auto;
}

#BoxContent {
  background: transparent;
  background-color: transparent;
  position: absolute;
  top: 167;
  left: 170;
  height: 292;
  width: 432;
  font: Arial;
  font-family: arial;
  line-height: 1.5;
  overflow: auto;
}

P {
  font: Arial;
  font-size: 14px;
  font-family: arial;
  line-height: 1.5;
  color: black;
}

LI {
  font: Arial;
  font-size: 14px;
  font-family: arial;
  line-height: 1.4;
  color: black;
}

#MenuButton1 {
  position: absolute;
  top: 157px;
  left: 657px;
}

#MenuButton2 {
  position: absolute;
  top: 190px;
  left: 657px;
}

#MenuButton3 {
  position: absolute;
  top: 221px;
  left: 657px;
}

#MenuButton4 {
  position: absolute;
  top: 253px;
  left: 657px;
}

#MenuButton5 {
  position: absolute;
  top: 284px;
  left: 657px;
}

#MenuButton6 {
  position: absolute;
  top: 314px;
  left: 657px;
}

#MenuButton7 {
  position: absolute;
  top: 375px;
  left: 657px;
}

#MenuButton8 {
  position: absolute;
  top: 406px;
  left: 657px;
}