body {
    background-color: gold;
    margin:0;
    padding:0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.anim--jackInTheBox {
  animation: jackInTheBox linear 1s;
}

#fixed_text {
    position: fixed;
    bottom: 30%;
    width: 100vw;
    text-align: center;
}

@keyframes jackInTheBox {
  from {
    opacity: 0;
    transform: scale(0.1) rotate(30deg);
    transform-origin: center bottom;
  }

  50% {
    transform: rotate(-10deg);
  }

  70% {
    transform: rotate(3deg);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}