html {
  margin: 0;
  padding: 0;
  }

 body {
  background-image: url("Images/bgnd_08.png");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  transform-origin: center center;
}

#guestbook-iframe {
  position: absolute;
  top: 35vh;
  left: 36vw;
  transform-origin: center center;
}

.guestbook {
  height: 426px;
  margin: auto;
  margin-top: -90px;
  margin-bottom: -25px;
  width: 125%;
}