#wrapper {
  margin-left: auto;
  margin-right: auto;
  margin-top: 4vh;
}

#aspect {
  position:relative;
  height:0;
}

#aspect-inner {
  bottom: 0;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
}

.flipbook {
  height: 100%;
  transition: margin-left 0.25s ease-out;
  width: 100%;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.flipbook .page {
  background: white;
  height: 100%;
  width: 100%;
}

.flipbook .page img {
  max-width: 100%;
  height: 100%;
}

button {
font-size: 100%;
background: #c8c8ff;
padding: 5px;
border: 0;
display: block;
margin-left: auto;
margin-right: auto;
margin-bottom: 20px;
}

button:hover {
background:#0066ff; 
color:#ffffff;
} 

/* Full Page Chrome, Safari and Opera syntax */
:-webkit-full-screen {
   background-image: url(../flipbook-resources/background.jpg);   
}

/* Full Page Firefox syntax */
:-moz-full-screen {
  background-image: url(../flipbook-resources/background.jpg); 
}

/* Full Page IE/Edge syntax */
:-ms-fullscreen {
  background-image: url(../flipbook-resources/background.jpg);
}

/* Full Page Standard syntax */
:fullscreen {
 background-image: url(../flipbook-resources/background.jpg);
}