gitbook/theme/stylesheets/website/markdown.less

.book .book-body .page-wrapper .page-inner section {
    display: none;
}

.book .book-body .page-wrapper .page-inner section.normal {
    .markdown-content(@content-color, @content-line-height);

    pre, code {
        @import "./highlight/white.less";
    }
}

.book.color-theme-1 .book-body .page-wrapper .page-inner section.normal {
    color:@page-color-1;

    pre, code {
        background: #fdf6e3;
        color: #657b83;
        border-color: darken(#fdf6e3, 15%);

        @import "./highlight/sepia.less";
    }

    table {
        th, td {
            border-color: darken(#fdf6e3, 25%);
        }

        tr {
            background: #fdf6e3;
            color: inherit;
            border-color: #444;
        }

        tr:nth-child(2n) {
            background-color: darken(#fdf6e3, 5%);
        }
    }
}

.book.color-theme-2 .book-body .page-wrapper .page-inner section.normal {
    color:@page-color-2;

    pre, code {
        background: black;
        color: #eaeaea;
        border-color: #000;

        @import "./highlight/night.less";
    }

    table {
        th, td {
            border-color: #444;
        }

        tr {
            background-color: black;
            color: #eaeaea;
            border-color: #444;
        }

        tr:nth-child(2n) {
            background-color: #222;
        }
    }
}