appendFileContentsTo(document.head(), "<style>", releaseNotesCss, "</style>");
    }

    private void appendFileContentsTo(Element element, String open, File file, String close) {
        try (FileReader reader = new FileReader(file)) {
            element.append(open + CharStreams.toString(reader) + close);
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }