styles.css

html,
body {
  height: 100%;
}
body {
  font-family: 'Montserrat', sans-serif;
  color: #fff;
  margin: 0;
  background: url(bg.jpg);
  background-size: 100%;
  background-position: center;
  overflow: hidden;
}
div {
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
}
h1 {
  font-size: 4em;
}
p {
  font-size: 1.2em;
}
img {
  position: absolute;
  width: 100%;
  top: -30%;
  opacity: 0;
}

/* ------ ANIMATIONS ------ */
div {
  animation-name: background-show;
  animation-duration: 2.5s;
}
body {
  animation-name: grow;
  animation-duration: 1s;
  animation-timing-function: ease-out;
}
h1 {
  animation: show 3s, translate 3s, translate2 3s 3s;
  /*animation-timing-function: ease-out;
  animation-delay: 0;
  animation-direction: alternate;
  animation-iteration-count: infinite;
  animation-fill-mode: none;
  animation-play-state: running;*/
}
.p1 {
  animation: p1 6s;
}
.p2 {
  animation: p2 8s;
}
img {
  animation: showImage 1.5s 9.2s;
}

@keyframes show {
  0% {
    opacity: 0;
    color: #aaa;
  }
  100% {
    opacity: 1;
    color: #fff;
  }
}
@keyframes background-show {
  0% {
    background: rgba(0, 0, 0, 0);
  }
  100% {

  }
}
@keyframes showImage {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes translate {
  0% {
    transform: translateY(140px);
  }
  100% {
    transform: translateY(70px);
  }
}
@keyframes translate2 {
  0% {
    transform: translateY(70px);
  }
  100% {
    transform: translateY(0px);
  }
}
@keyframes grow {
  0% {
    background-size: 120%;
  }
  100% {
    background-size: 100%;
  }
}
@keyframes p1 {
  0%, 60% {
    transform: translateX(500px);
    opacity: 0;
  }
  80% {
    opacity: 1;
  }
}
@keyframes p2 {
  0%, 70% {
    opacity: 0;
    transform: translateX(-500px);
  }
  80% {
    opacity: 1;
  }
}