/* timeline introduction animation */
body:after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  background-color: #00AAFF;
  -webkit-animation-iteration-count: 1;
          animation-iteration-count: 1;
  -webkit-animation-duration: .5s;
          animation-duration: .5s;
  -webkit-animation-name: timeline_intro;
          animation-name: timeline_intro;
}

@-webkit-keyframes timeline_intro {
  0%, 30% {
    width: 100%;
  }
  100% {
    width: 0;
  }
}

@keyframes timeline_intro {
  0%, 30% {
    width: 100%;
  }
  100% {
    width: 0;
  }
}

/* content introduction animation */

body > * {
  -webkit-animation-iteration-count: 1;
          animation-iteration-count: 1;
  -webkit-animation-duration: 1s;
          animation-duration: 1s;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
  -webkit-animation-name: content_intro;
          animation-name: content_intro;
}

@-webkit-keyframes content_intro {
  0%, 50% {
    opacity: 0;
    -webkit-transform: translateY(100px);
            transform: translateY(100px);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}

@keyframes content_intro {
  0%, 50% {
    opacity: 0;
    -webkit-transform: translateY(100px);
            transform: translateY(100px);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}