builder.append("<head>\n");
builder.append(" <meta http-equiv='content-type' content='text/html; charset=utf-8'>\n");
builder.append(" <meta name='viewport' content='width=device-width, initial-scale=1.0'>\n");
builder.append("<head>\n");
builder.append(" <meta http-equiv='content-type' content='text/html; charset=utf-8'>\n");
builder.append(" <meta name='viewport' content='width=device-width, initial-scale=1.0'>\n");