* {
  margin: 0px;
  padding: 0px;
  list-style: none;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-tap-highlight-color:transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  border: 0;
  outline : 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #000;
}

#libro {
  margin: auto;
  position: relative;
  width: 100%;
  height: 100%;
  opacity: 0;
  overflow: hidden;
}

.hoja {
  position: absolute;
  top: 0px;
  left: 0px;
  list-style: none;
  height: 100%;
  -webkit-perspective: 2000px;
  perspective: 2000px;
}

.hoja .par, .hoja .imp {
  position: absolute;
  top: 0px;
  width: 100%;
  height: 100%;
  -webkit-transition: -webkit-transform 1s;
  -webkit-backface-visibility: hidden;
  -webkit-background-size: auto 100%;
  transition: transform 1s;
  backface-visibility: hidden;
  background-size: auto 100%;
  text-align: center;
  margin: 0px;
}

.hoja .par {
  left: 0px;
  -webkit-transform-origin: left center;
  transform-origin: left center;
  background-position: right center;
}

.hoja .imp {
  -webkit-transform: rotateY(-180deg);
  -webkit-transform-origin: right center;
  transform: rotateY(-180deg);
  transform-origin: right center;
  background-position: left center;
}

.hoja.pasar .par {
  -webkit-transform: rotateY(-180deg);
  transform: rotateY(-180deg);
}

.hoja.pasar .imp {
  -webkit-transform: rotateY(-360deg);
  transform: rotateY(-360deg);
}

#banSig, #banAnt {
  height: 100%;
  width: 100px;
  position: absolute;
  top: 0px;
  display: table;
  z-index: 9999;
}

#banAnt {
  left: 0px;
  -webkit-transition: 300ms left;
  transition: 300ms left;
}

#banSig {
  right: 0px;
  -webkit-transition: 300ms left;
  transition: 300ms right;
}

#banAnt.banAnt_activar {
  left: 0px;
}

#banSig.banSig_activar {
  right: 0px;
}

#pagSig, #pagAnt {
  height: 100%;
  width: 100%;
  display: table-cell;
  vertical-align: middle;
}

#pagSig_btn, #pagAnt_btn {
  width: 100%;
  height: 200px;
  border: 10px solid #ff6600;
  background: center center no-repeat #fff;
  -webkit-background-size: 100%;
  background-size: 100%;
  outline: 0;
}

button::-moz-focus-inner {
  border: 0;
}

#pagSig_btn {
  border-radius: 20px 0px 0px 20px;
  box-shadow: 0 0 5px;
  background-image: url(assets/flecha_der_n.svg);
  border-right-width: 0px;
}

#pagAnt_btn {
  border-radius: 0px 20px 20px 0px;
  box-shadow: 0 0 5px;
  background-image: url(assets/flecha_izq_n.svg);
  border-left-width: 0px;
}

@media (max-width:800px){
  #banSig, #banAnt {
    width: 50px;
  }
  #pagSig_btn, #pagAnt_btn {
    height: 100px;
    border: 5px solid #ff6600;
  }
}