.center {
  text-align: center; 
  font-size: 500%;
}

.startingpage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 10px;
}

.promptingpage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 10px;
}

.images {
  display: none;
  width: 150%;
  -webkit-filter: drop-shadow(2px 2px 0 white)
  drop-shadow(0px 0px 0 white);
filter: drop-shadow(2px 2px 0 white) 
drop-shadow(0px 0px 0 white);
}

.rightbox {
  width: 90%;
  height: 90%;
}
.rightimage {
  position: relative;
  display: inline-block;
  width: 10%;
  height: 10%;
  -webkit-filter: drop-shadow(2px 2px 0 white)
                  drop-shadow(0px 0px 0 white);
  filter: drop-shadow(2px 2px 0 white) 
          drop-shadow(0px 0px 0 white);
}

.leftimage {
  position: relative;
  display: inline-block;
  width: 10%;
  height: 10%;
  -webkit-filter: drop-shadow(2px 2px 0 white)
                  drop-shadow(0px 0px 0 white);
  filter: drop-shadow(2px 2px 0 white) 
          drop-shadow(0px 0px 0 white);
}