#container {
  margin: 0 auto;
  width: 800px;
}

#pop_up_con { }

#pop_up {
  background: rgba(0,0,0,0.8);
  position: absolute;
  width: 100%;
  height: 100%;
  display: none;
}

#pop_up_con {
  width: 900px;
  position: absolute;
  height: 600px;
  left: 50%;
  top: 50%;
  margin-left: -450px;
  margin-top: -300px;
}

#target {
  width: 800px;
  height: 600px;
  float: left;
}

#target img {
  width: 100%;
  height: 100%;
}

#pic_list li {
  float: left;
  border: 3px solid #ffffff;
}

#pic_list li img { width: 215px; }

#left,
#right {
  float: left;
  height: 100%;
  width: 50px;
}

#left img,
#right img {
  margin-top: 275px;
  cursor: pointer;
}

#right { left: 50%; }