body {
    background-color: #d1912d66;
}

nav div {
    display: flex;
}
nav .nav-title {
    text-transform: uppercase;
}
nav .nav-play-link {
    font-size: small;
}
.nav {
    background-color: silver;
    min-height: 2rem;
}

#currentNode div {
    animation: fadeIn 1s;
}
@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

footer {
    position: fixed;
    bottom: 0;
    right: 0;
    font-size: xx-small;
    font-style: italic;
}

#books {
    display: flex;
    flex-wrap: wrap;
}

#books .bookBox {
    margin: 1rem;
}

#currentNode {
    margin: 5%;
}

/* purecss menu */
.custom-menu-wrapper {
  background-color: #808080;
  margin-bottom: 2.5em;
  white-space: nowrap;
  position: relative;
}

.custom-menu {
  display: inline-block;
  width: auto;
  vertical-align: middle;
  -webkit-font-smoothing: antialiased;
}

.custom-menu .pure-menu-link,
.custom-menu .pure-menu-heading {
  color: white;
}

.custom-menu .pure-menu-link:hover,
.custom-menu .pure-menu-heading:hover {
  background-color: transparent;
}

.custom-menu-top {
  position: relative;
  padding-top: .5em;
  padding-bottom: .5em;
}

.custom-menu-brand {
  display: block;
  text-align: center;
  position: relative;
}

.custom-menu-toggle {
  width: 44px;
  height: 44px;
  display: block;
  position: absolute;
  top: 3px;
  right: 0;
  display: none;
}

.custom-menu-toggle .bar {
  background-color: white;
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 100px;
  position: absolute;
  top: 22px;
  right: 12px;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
  transition: all 0.5s;
}

.custom-menu-toggle .bar:first-child {
  -webkit-transform: translateY(-6px);
  -moz-transform: translateY(-6px);
  -ms-transform: translateY(-6px);
  transform: translateY(-6px);
}

.custom-menu-toggle.x .bar {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
}

.custom-menu-toggle.x .bar:first-child {
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

.custom-menu-screen {
  background-color: rgba(0, 0, 0, 0.5);
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -ms-transition: all 0.5s;
  transition: all 0.5s;
  height: 3em;
  width: 70em;
  position: absolute;
  top: 0;
  z-index: -1;
}

.custom-menu-tucked .custom-menu-screen {
  -webkit-transform: translateY(-44px);
  -moz-transform: translateY(-44px);
  -ms-transform: translateY(-44px);
  transform: translateY(-44px);
}

@media (max-width: 62em) {

  .custom-menu {
      display: block;
  }

  .custom-menu-toggle {
      display: block;
      display: none\9;
  }

  .custom-menu-bottom {
      position: absolute;
      width: 100%;
      border-top: 1px solid #eee;
      background-color: #808080\9;
      z-index: 100;
  }

  .custom-menu-bottom .pure-menu-link {
      opacity: 1;
      -webkit-transform: translateX(0);
      -moz-transform: translateX(0);
      -ms-transform: translateX(0);
      transform: translateX(0);
      -webkit-transition: all 0.5s;
      -moz-transition: all 0.5s;
      -ms-transition: all 0.5s;
      transition: all 0.5s;
  }

  .custom-menu-bottom.custom-menu-tucked .pure-menu-link {
      -webkit-transform: translateX(-140px);
      -moz-transform: translateX(-140px);
      -ms-transform: translateX(-140px);
      transform: translateX(-140px);
      opacity: 0;
      opacity: 1\9;
  }

  .pure-menu-horizontal.custom-menu-tucked {
      z-index: -1;
      top: 45px;
      position: absolute;
      overflow: hidden;
  }

}