* {
  margin: 0;
  padding: 0;
}

body {
  height: 4300px;
}

#app {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.fixed-section {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
}

.firstpage {
  background: #71b1d9;
  z-index: 2;
}

.secondpage {
  background: #cabaad;
}

.thirdpage {
  transform: translate3d(0, 100vh, 0);
  background: #231f20;
  padding-top: 50px;
}
.thirdpage .title {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2vw;
}
.thirdpage .imgs {
  margin: 100px 0;
  position: relative;
}

.img {
  position: absolute;
  display: block;
  top: 10vw;
}

.img1 {
  left: calc(50vw - 350px);
}
.img2 {
  left: calc(50vw - 50px);
  top: 16vw;
}

.thirdpage .title h2 {
  color: #c2c2c2;
}

.background,
.middleground,
.foreground {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

.bg-block {
  background: #c3af9d;
  position: absolute;
  bottom: -10vh;
  left: 0;
  width: 100%;
  height: 40vh;
  transform: skewY(-2deg);
}

.mg-block {
  background: #ab805c;
  position: absolute;
  bottom: -45vh;
  left: -30vw;
  width: 100%;
  height: 40vh;
  transform: skewY(40deg);
}

.fg-block {
  background: #6d5a44;
  position: absolute;
  bottom: -45vh;
  left: 0;
  width: 100%;
  height: 60vh;
  transform: skewY(-20deg);
}

.heading {
  position: absolute;
  font-size: 5vw;
  left: 26vw;
  bottom: 24vw;
}

.firstpage h1 {
  color: #f4f4f4;
}

.secondpage h1 {
  color: #fdeabf;
  transform: scale(1.35);
}

.secondpage h1 span {
  display: inline-block;
}

.turtlemascot {
  position: absolute;
  width: 40vw;
  left: 32vw;
  bottom: 17vw;
  transform: scale(0);
}

.bottom-sect {
  height: 1000px;
}

.progress-line {
  position: absolute;
  width: 2px;
  background: red;
  height: 100%;
  left: 5vw;
  top: 0;
  transform: translate3d(0, -100%, 0);
  z-index: 0;
}