/* section numbering */

body {
    counter-reset: h2;
}

h2 {
    counter-reset: h3;
}

h3 {
    counter-reset: h4;
}

h4 {
    counter-reset: h5;
}

h5 {
    counter-reset: h6;
}

article h2::before {
    content: counter(h2) ". ";
    counter-increment: h2;
}

article h3::before {
    content: counter(h2) "." counter(h3) ". ";
    counter-increment: h3;
}

article h4::before {
    content: counter(h2) "." counter(h3) "." counter(h4) ". ";
    counter-increment: h4;
}

article h5::before {
    content: counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) ". ";
    counter-increment: h5;
}

article h6::before {
    content: counter(h2) "." counter(h3) "." counter(h4) "." counter(h5) "." counter(h6) ". ";
    counter-increment: h6;
}

h2.nocount::before,
h3.nocount::before,
h4.nocount::before,
h5.nocount::before,
h6.nocount::before {
    content: "";
    counter-increment: none;
}