body {
  padding: 0px;
  margin: 1em;
  border: 0px;
  font-family: verdana, arial, helvetica, sans-serif;
  font-size: medium;
  color: #fff;
  background-color: #000;
}
img {
  border: 0px;
  padding: 0px;
  margin: 0px 0px 0px 0px;
}
/* splash image */
#splash {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 543px;
  height: 570px;
  z-index: 1;
}
/* left closed door image */
#ldc {
  position: absolute;
  top: 333px;
  left: 640px;
  height: 174px;
  width: 80px;
  visibility: visible;
  z-index: 1;
}
/* left open door image */
#ldo {
  position: absolute;
  top: 333px;
  left: 640px;
  height: 174px;
  width: 80px;
  visibility: hidden;
  z-index: 2;
}
/* right closed door image */
#rdc {
  position: absolute;
  top: 333px;
  left: 720px;
  height: 174px;
  width: 80px;
  visibility: visible;
  z-index: 1;
}
/* right open door image */
#rdo {
  position: absolute;
  top: 333px;
  left: 720px;
  height: 174px;
  width: 80px;
  visibility: hidden;
  z-index: 2;
}
/* reveal the left open door image if mouse hovers over the left door */
a:hover #ldo {
  visibility: visible;
}
/* reveal the right open door image if mouse hovers over the right door */
a:hover #rdo {
  visibility: visible;
}
#arrow {
  position: absolute;
  top: 507px;
  left: 640px;
  height: 57px;
  width: 160px;
  z-index: 2;
}
/* back link */
#back {
   font-size: large;
}