html, body {
  padding: 0;
  margin: 0;

  font-family: sans-serif;

  width: 100%;
  height: 100%;
  overflow: hidden;
}

h1 {
  pointer-events: none;
}

#h1-after {
  position: absolute;
  width: 100%;
  height: 4px;
  left: 0;
  top: 46px;

  pointer-events: none;
  background-color: #ff9500;

  opacity: 0;

  animation-duration:  0.25s;
  animation-timing-function: ease-in;
  animation-fill-mode: both;

  -webkit-animation-duration:  0.25s;
  -webkit-animation-timing-function: ease-in;
  -webkit-animation-fill-mode: both;
}

[data-anim='reveal'] {
  animation-name: reveal;
  -webkit-animation-name: reveal;
}

@keyframes reveal {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@-webkit-keyframes reveal {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

[data-anim='hide'] {
  animation-name: hide;
  -webkit-animation-name: hide;
}

@keyframes hide {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

@-webkit-keyframes hide {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

button {
  position: absolute;
  display: block;
  top: 0;
  right: 0;
  height: 50px;

  border: 0;
  border-radius: 0;
  outline: 0;
  background: none;
  padding: 0 15px;

  text-align: center;
  text-decoration: underline;
  font-size: 14px;
  color: #ffffff;
  -moz-appearance: none;

  opacity: 1;
  transition: transform 0.1s linear,
              opacity 0.1s linear;
  -webkit-transition: -webkit-transform 0.1s linear,
                      opacity 0.1s linear;

  -webkit-tap-highlight-color: rgba(0,0,0,0);
}

button.transitioning {
  opacity: 0.5;
  transform: scale(0.6, 0.6);
  -webkit-transform: scale(0.6, 0.6);
  pointer-events: none;
}

ul {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

body > section {
  position: absolute;
  top: 50px;
  width: 100%;
  height: calc(100% - 50px);

  -webkit-overflow-scrolling: touch;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
}