style.css

@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700);

body {
    margin: 0;
    background: #000;
    overflow: hidden;
}

.intro {
    position: absolute;
    top: 40%;
    left: 20%;
    z-index: 1;    
}

.intro_texto {
    font-family: "News Cycle", sans-serif;
    color: #00BFFF;
    font-weight: 400;
    letter-spacing: .1em;
}

.historia {
    position: absolute;
    top: 80%;
}

.historia_texto {
    font-family: "News Cycle", sans-serif;
    font-weight: 700;
    color: #FFD700;
    text-align: justify;
    letter-spacing: .1em;
    line-height: 1.1em;
}

.paragrafos {
    position: absolute;
    left: 15%;
    width: 70%;
    z-index: 1;
    transform-origin: 50%;
    transform: perspective(300px) rotateX(20deg);
}

.botao {
    color: white;
    display: inline-block;
    margin: 10px;
    padding: 5px;
    border: 3px solid;
    border-radius: 5px;
    cursor: pointer;
}

.intro_animacao {
   animation: intro 2s ease-out 0s;
}

.historia_animacao {
    animation: paragrafos 80s linear 2s;
}

@keyframes intro {
  0% {
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@keyframes paragrafos {
  0% {
    top: 75%;
    opacity: 1;
  }
  95% {
    opacity: 1;
  }
  100% {
    top: -200%;
    opacity: 0;
  }
}

/*Fundo com as estrelas*/
canvas {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
}