#bookPlayer {
    position: relative;
    height: 100%;
    width: 100%;
    overflow: auto;
    z-index: 100;
    background: #fff;
}

.topButtons {
    top: 0.5vh;
    z-index: 1002;
    position: sticky;
}

#btnBookplayerToc {
    float: left;
    margin-left: 2vw;
}

#btnBookplayerExit {
    float: right;
    margin-right: 2vw;
}

.bookplayerButtonIcon {
    color: black;
    opacity: 0.7;
}

#dialogToc {
    background-color: white;
}

.toc li {
    margin-bottom: 5px;
}

.bookplayerErrorMsg {
    text-align: center;
}

#viewer {
    align-items: flex-start;
}

#btnBookplayerPrev {
    margin: 0.5vh 0.5vh;
    color: black;
}

#btnBookplayerNext {
    margin: 0.5vh 0.5vh;
    color: black;
}

.button-wrapper {
    text-align: center;
    position: relative;
    height: 0;
}

.top-button {
    margin: 0.5vh 2em;
}

.bottom-button {
    margin: 2em 0.5vh;
}