html, body {
    margin: 0;
    padding: 0;
    font-size: 12pt;
}

body {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}

#contentselector {
    min-height: 1em;
    flex-grow: 0;
    flex-shrink: 0;
    background-color: #eee;
}

#context {
    flex-grow: 1;
    flex-shrink: 1;
}

#context.loadingcontent {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}

.notebook-viewarea .ebook-elementbox h1.ebook-elementbox-title .ebook-elementbox-boxnumber {
    display: none!important;
}