#ban {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -144px;
  margin-left: -256px;
  width: 512px;
  height: 288px;
  border: 2px solid #424242;
  border-radius: 10px;
  background-image: url(../img/ban.png);
  background-size: cover;
  background-position: center;
}