 It can create and edit pages in accordance to HTML 4, XHTML 1.1, HTML 5 and XHTML 5.It supports CSS 2.1 and all parts of CSS 3 already implemented by Gecko.BlueGriffon also includes SVG-edit, an XUL-based editor for SVG that is originally distributed as an add-on to Firefox and was adapted to BlueGriffon.