#book .toc .toc {
        font-size: 1.1rem;
        line-height: 2.1rem;
        padding-left: 0.3rem;
    }

    #book .toc .title {
        font-size: 2rem;
        font-weight: 600;
    }

    #book .toc li li {
        padding-left: 1.5rem;
    }

    #book .label {
        color: inherit;
        display: inline;
        font-size: inherit;
        font-weight: normal;
    }

    #book .number {
        color: inherit;
        background-color: #ffffff;
        display: inline;
        font-size: inherit;
        font-weight: normal;
    }

    #book header .label {
        color: inherit;
        font-weight: inherit;
        font-size: inherit;
    }

    #book header .sep {
        color: inherit;
        font-weight: inherit;
        font-size: inherit;
    }

    #book header .number {
        background-color: #ffffff;
        color: #1a7d66;
        display: inline;
        color: inherit;
        font-weight: inherit;
        font-size: inherit;
    }

    #book dt.varlistentry {
        font-size: 1.1rem;
        font-weight: bold;
        padding-bottom: 0.5rem;
    }

    #book ol {
        padding-left: 3.35rem;
    }

    #book dd {
        padding-left: 2.2rem;
    }

    #book section {
        margin: 0;
        padding: 0;
    }

    #book .chapter span.number {
        background: #ffffff;
        color: #1a7d66;
        font-size: 2rem;
        font-weight: 600;
        display: inline;
        padding: 0;
        margin: 0;
    }

    #book section h2 span.number {
        background: #ffffff;
        color: #1a7d66;
        font-size: 2rem;
        font-weight: 600;
        display: inline;
        padding: 0;
        margin: 0;
    }

    #book section h3 span.number {
        background: #ffffff;
        color: #1a7d66;
        font-size: inherit;
        font-weight: 600;
        display: inline;
        padding: 0;
        margin: 0;
    }

    #book section h4 span.number {
        background: #ffffff;
        color: #1a7d66;
        font-size: inherit;
        font-weight: 600;
        display: inline;
        padding: 0;
        margin: 0;
    }

    #book section h5 span.number {
        background: #ffffff;
        color: #1a7d66;
        font-size: inherit;
        font-weight: 600;
        display: inline;
        padding: 0;
        margin: 0;
    }

    #book span.number {
        padding: 0;
        margin: 0;
    }

    #book h2, h3, h4, h5 {
        font-size: 2rem;
        line-height: 2.6rem;
        font-weight: 600;
        padding-bottom: 2rem;
        color: #363636;
    }

    h4 {
        font-size: 1.7rem;
        padding-top: 1.7rem;
        padding-bottom: 1.3rem;
    }

    h5 {
        font-size: 1.6rem;
        padding-top: 1.7rem;
        padding-bottom: 1.3rem;
    }

    #book h5 > span.number {
        font-size: 1.6rem;
        padding: 0;
        margin: 0;
    }

    #book figure .title {
        font-size: 1.075rem;
    }

    #book figure span.number {
        font-size: 1.075rem;
        padding: 0;
        margin: 0;
    }

    #book figure header {
        width: 100%;
    }

    #book figure header .title .label {
        display: inline;
    }

    #book figure header .number {
        margin-left: -0.2rem;
        padding-right: 0.2rem;
    }

    #book figure header .number::after {
        content: '-';
    }

    #book figure table {
        width: 100%;
    }

    #book table {
        margin-top: 0.9rem;
        border-bottom: 2px solid #dddddd;
    }

    #book thead {
        background-color: whitesmoke;
    }

    #book th {
        text-align: left;
        padding: 0.65rem;
    }

    #book p {
        font-size: 1.075rem;
        line-height: 1.75rem;
        margin: 0;
        margin-bottom: 1rem;
    }

    #book pre {
        margin: 0;
        padding: 1rem;
        margin-bottom: 1rem;
    }

    #book code {
        font-family: 'Menlo', monospace;
        font-size: 0.85rem;
        color: #333333;
    }

    #book .admonition {
        margin-top: 2rem;
        margin-bottom: 2rem;
        margin-left: 2rem;
        border-left: 0.6rem solid #1a7d66;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    #book .admonition .icon {
        display: none;
    }

    #book .admonition .title {
        font-size: 1.25rem;
        font-weight: 700;
        padding-bottom: 1rem;
    }

    #book .admonition p {
        font-size: 1.00rem;
        line-height: 1.60rem;
    }

    #book .cover {
        width: 100px;
    }

    #book-header h1 {
        font-size: 2.5rem;
        font-weight: 600;
        padding-bottom: 1rem;
    }

    .cover {
        width: 200px;
        padding-bottom: 0;
        margin-right: 1em;
    }

    #book article header {
        display: none;
    }

    .navbox {
        border: 1px solid #cccccc;
        padding: 15px 30px;
        box-shadow: rgba(0, 0, 0, 0.05) 0px 1px 2px 0px;
    }

    .centre {
        text-align: center;
    }

    .right {
        text-align: right;
    }

    .chapter {
        display: block;
    }

    #preface header h2 {
        font-size: 2rem;
    }

    #preface section header h2 {
        padding-top: 1rem;
        padding-bottom: 1rem;
        font-size: 1.8rem;
    }

    #book sup {
        line-height: 0px;
    }

    #book footer p {
        font-size: 0.85rem;
    }

    #book footer .footnote-number {
        display: inline-block;
    }

    #book footer .footnote-body {
        display: inline-block;
    }