/*#content .side-nav {
  position: absolute;
  right: -35px;
  top: 0;
  bottom: 0;
  height: 100%;
  width: 35px;
  z-index: 3000;
}
#content .side-nav:hover {
  width: 33%;
  background: #000000;
}
#content .side-nav:hover .chapter-content {
  top: 15px;
  left: 10px;
}
#content .side-nav:hover .chapter-number, #content .side-nav:hover .chapter-title {
  font-size: 16px;
}
#content .side-nav:hover .chapter-number {
  margin-right: 5px;
  color: #676292;
}
#content .side-nav a > div {
  position: relative;
  border-top: solid #FFFFFF 1px;
  border-left: solid #FFFFFF 1px;
  border-right: solid #FFFFFF 1px;
}
#content .side-nav a > div:hover {
  background-color: #FFFFFF;
}
#content .side-nav a > div:hover .chapter-title {
  color: #000000;
}
#content .side-nav .chapter1 {
  height: 10%;
}
#content .side-nav .chapter2 {
  height: 40%;
}
#content .side-nav .chapter3 {
  height: 30%;
}
#content .side-nav .chapter4 {
  height: 10%;
}
#content .side-nav .chapter5 {
  height: 10%;
}
#content .side-nav .chapter-content {
  white-space: nowrap;
  position: absolute;
  left: 5px;
  top: 5px;
  transition: .5s;
}
#content .side-nav .chapter-number, #content .side-nav .chapter-title {
  display: inline-block;
  color: #FFFFFF;
  font-size: 10px;
  transition: .5s;
}
#content .side-nav .chapter-number {
  margin-right: 15px;
}
#content .nav-selector {
  position: absolute;
  width: 100%;
  z-index: 2001;
  color: blue;
  height: 50px;
  border-bottom: 1px solid #3c3c3c;
}
#content .nav-selector.active {
  color: white;
}
#content .nav-selector .chapter-label {
  line-height: 50px;
  padding-left: 20px;
}
#content .nav-selector .arrow {
  position: absolute;
  top: 18px;
  right: 12px;
  width: 0;
  height: 0;
}
#content .nav-selector .arrow.arrow-up {
  border-left: 9px solid transparent;
  border-right: 9px solid transparent;
  border-bottom: 9px solid #fff;
}
#content .nav-selector .arrow.arrow-down {
  border-left: 9px solid transparent;
  border-right: 9px solid transparent;
  border-top: 9px solid #fff;
}
#content .mobile-nav {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  height: 100%;
  width: 100%;
  z-index: 3000;
  margin-top: 13%;
  opacity: 0;
  transition: opacity 1s;
}
#content .mobile-nav.active {
  opacity: 1;
}
#content .mobile-nav a > div {
  height: 16%;
  position: relative;
  border-bottom: solid #3c3c3c 1px;
  border-left: solid #3c3c3c 1px;
  border-right: solid #3c3c3c 1px;
}
#content .mobile-nav .active > div {
  background: #FFF;
  color: red;
}
#content .mobile-nav .active .chapter-title {
  color: #333;
}
#content .mobile-nav .active .chapter-number {
  color: #b3d3ee;
}
#content .mobile-nav .chapter-content {
  white-space: nowrap;
  position: absolute;
  left: 5px;
  top: 5px;
  transition: .5s;
}
#content .mobile-nav .chapter-number, #content .mobile-nav .chapter-title {
  display: inline-block;
  color: #FFFFFF;
  font-size: 16px;
  transition: .5s;
  padding: 10px;
}
#content .mobile-nav .chapter-title {
  left: 30px;
}
*/