We recommend that you make it habit to use our SEO4 H-TAG PYRAMID.
[H1]
[H2][H2]
[H3][H3][H3]
[H4][H4][H4][H4]
[H5][H5][H5][H5][H5]
[H6][H6][H6][H6][H6][H6]
Its not actually what the W3 standard says – But its within the rules of the Standard and makes sure that your content is max. relevant.