body{
  background-color: black;
  background-image: url("Background.png");
  margin: 0;
  padding: 0;
  }
#game{
  background-color: black;
  width: 960px;
  height: 540px;
  display: inline-block;
  }
#left{
 background-color: white; 
 width: 15px;
 height: 100px;
 position: absolute;
 left: 20px;
 top: 200px;
  }
#right{
 background-color: white; 
 width: 15px;
 height: 100px;
 position: absolute;
 left: 920px;
 top: 200px;
  }
#ball{
  background-color: white;
  width: 20px;
  height: 20px;
  border-radius: 100%;
  position: absolute;
  left: 470px;
  top: 260px;
  }
#Player{
  color: white;
  position: absolute;
  left: 100px;
  top: 10px;
  font-size: 50px;
  }
#CPU{
  color: white;
  position: absolute;
  left: 820px;
  top: 10px;
  font-size: 50px;
  }
  #Game_over{
    position: absolute;
    visibility: hidden;
    left: 0;
    top: 200px;
    color: white;
    text-align: center;
    width: 960px;
    height: 540px;
    font-size: 80px;
  }
    #backbutton{
      display: inline-block;
      position: absolute;
      left: 960px;
      font-size: 80px;
  }