public HtmlCreator() {
        html.append("<!DOCTYPE html>");
        html.append("<head>");
        html.append("<meta charset=\"utf-8\">");
        html.append("<style type='text/css'>.version{padding:10px;text-decoration-line: none;}.message-header{" +
                "background-color: #900C3F;\n" +
                "color: #fff;\n" +
                "font-weight: bold;" +
                "-webkit-box-align: center;\n" +
                "-ms-flex-align: center;\n" +
                "align-items: center;\n" +
                "color: #fff;\n" +
                "display: -webkit-box;\n" +
                "display: -ms-flexbox;\n" +
                "display: flex;\n" +
                "-webkit-box-pack: justify;\n" +
                "-ms-flex-pack: justify;\n" +
                "justify-content: space-between;\n" +
                "line-height: 1.25;\n" +
                "padding: 0.5em 0.75em;\n" +
                "position: relative;" +
                "}" +
                ".message-body{" +
                "background-color: #fff5f7;" +
                "font-size:1rem;" +
                "border-color: #ff3860;\n" +
                "color: #900C3F;\n" +
                "border-top-left-radius: 0;\n" +
                "border-top-right-radius: 0;\n" +
                "border-top: none;\n" +
                "border: 1px solid #dbdbdb;\n" +
                "border-radius: 3px;\n" +
                "padding: 1em 1.25em;" +
                "}</style>");
    }
@Test
    public void testHtmlCreator() {
        String html = htmlCreator.html();
        Assert.assertEquals(true, html.contains("Blade"));
    }