body{overflow:hidden;margin:0;padding:0}#appbook{font-family:Avenir,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100%;width:100%;display:flex;flex-direction:column;color:#ccc;overflow:hidden;font-size:12px;-webkit-user-select:none;user-select:none;touch-action:none}.book-bg{background-repeat:no-repeat;background-position:center center;background-size:cover}