html {
  background: transparent;
}

.frame {
  height: 0;
  width: 0;
}

.main {
  background-image: url('bg.png');
}

html, body {
  height: 100%;
  overflow: scroll;
}
body { 
  font-size: 18px;
  font-weight: 300;
}


.scroll-img {
  position: fixed;
  object-fit: cover;
  width: calc(100vw - 10rem);
  height: calc(100vh - 1.5rem);
  top: 0.8rem;
  left: 3rem;
}

.scroll-img:not(.first) {
  opacity: 0;
  visibility: hidden;
  transform: scale(3);
}

@media only screen and (max-width: 600px) {
  .scroll-img {
    width: 100%;
  }
}


.blue {
  background: rgba(0, 0, 255, 0.361);
}

.orange {
  background: rgba(255, 230, 0, 0.361);
}

.red {
  background: rgba(255, 0, 0, 0.361);
}